What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
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363-131 121-55A 14-.5
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subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
PEN ADVERTIZING ON ....................40/905* ANIMAL ............................119/20 DESIGN .........................D30/108+ BOX FOR ...........................206/371 CAPS ..............................401/243+ CLEANERS ..........................15/423 DESIGN .........................D19/98 EXTRACTORS ........................29/808 FACSIMILE .........................358/296+ FACSIMILE DESIGN ..................D19/41+ FOUNTAIN (SEE FOUNTAIN PEN) .......401 FILLING DEVICES ................141/21+ TATTOOING ......................81/9.22 HOLDER (SEE PENHOLDERS) ...........15/435+ DESIGN .........................D19/81+ INKSTAND COMBINED ..............211/69.2+ LIGHT, PHOTOELECTRIC WITH LIGHT CONDUCTOR ...........250/227.12 PILL CARRIER ......................206/537 PLAY ..............................256/25 WITH BOTTOM ....................5/99.1 POINTS (SEE PENPOINTS) ............15/435+ RACK ..............................211/69.1+ DESIGN .........................D19/81+ RULING ............................401/221 ADJUSTABLE GAP .................401/256+ ADJUSTABLE GAP FOUNTAIN ........401/233 TYPE FLASHLIGHT ...................362/118 PENAMECILLIN ........................ 540/342 PENCIL .............................. 401/49+ ADVERTIZING ON ....................40/905* BOOK COVER COMBINED ...............281/30 BOX OR CASE .......................D03/30.1+ BOX SECTIONED .....................206/371 CALCULATOR COMBINED ...............235/64 CALENDAR COMBINED .................40/335 CLIP ..............................D19/56 COMPOSITIONS ......................106/19.R+ COSMETIC EG LIPSTICK OR EYEBROW ...401/49+ SHAPED .........................132/320 INDICIA CARRYING ..................40/334+ CALENDAR .......................40/335 MECHANICAL ........................401/49+ PACKAGE ...........................206/214 POCKET FASTENER ...................24/10.R+ DESIGN .........................D19/56+ RACK ..............................211/69.1+ SHARPENERS (SEE PENCIL SHARPENER) .30/451+ ELECTRIC .......................144/28.1+ PENCIL COMBINED ................401/50+ TYPE ELECTRONIC TUBES .............313 WOOD MAKING .......................144/28 PENCIL SHARPENER .................... D19/73+ IMPLEMENT .........................30/451+ BLADE ..........................30/165+ DEBRIS RECEIVER COMBINED .......30/453+ ERASER COMBINED ................15/105.53 PENCIL COMBINED ................401/50+ TOOL COMBINED ..................7/160+ MACHINE ...........................144 EDGE BEVELLING .................144/28.2 HAND MANIPULABLE ...............144/28.11 PENDANT EARRINGS ..........................63/13 JEWELRY ...........................D11/79+ WATCH PENDANT GEARING .............368/190+ WATCHCASE .........................368/301+ WATCHCASE MAKING ..................29/179 PENDULUM CLOCK .............................368/134+ CLOCK .............................968* DESIGN .........................D10/130 ELECTRIC .......................368/165+ ESCAPEMENT .....................368/134+ FACSIMILE SYNCHRONIZATION USING ...358/415 LEVEL AND PLUMB ...................33/353+ BUBBLE COMBINED ................33/353 LUBRICATOR FORCE FEED FOLLOWER ............184/44 FORCE FEED PUMP ................184/30 GRAVITY FEED RECIPROCATING VALVE ........................184/78 GRAVITY FEED ROTATABLE VALVE ...184/73 MILL ..............................241/129+ OPERATED CHANGEABLE EXHIBITOR .....40/485 SCALE .............................177/216+ TESTING DYNAMOMETER ....................73/862.381+ TENSILE STRESS .................73/836 TIDE OR WAVE MOTOR ................60/497+ PENETRATING (SEE PUNCH; PUNCTURING) NAILING AND STAPLING ..............227 NOZZLES ...........................239/271 PERFORATING DRILLING ..............83 POLE CLIMBERS .....................182/221 PRINTING BY .......................101/3.1+ SORTING ...........................209/688+ TESTING BY ........................73/81+ TYPEWRITER ........................40/135+ PENETRATION RESISTANT STOCK ......... 428/911* PENETROMETERS ....................... 73/54.23 PENHOLDERS .......................... 15/435+ DESK TYPE FOR DRAFTING ............206/371 INDICIA CARRYING ..................40/334+ CALENDAR .......................40/335 PICTURE COMBINED ..................40/334+ PENICILLAMINE ....................... 562/558 PENICILLIN F ........................ 540/314 PENICILLIN G ........................ 540/342 PENICILLIN G, IN DRUG ............... 514/199 PENICILLIN K ........................ 540/314 PENICILLIN N ........................ 540/335 PENICILLIN O ........................ 540/314 PENICILLIN S ........................ 540/314 PENICILLIN V ........................ 540/341 PENICILLIN X ........................ 540/342 PENICILLINS ......................... 540/304+ BY FERMENTATION ...................435/43 MEDICINES CONTAINING ..............514/192+ PENMANSHIP INSTRUCTION .............. 434/162+ PENNANT ............................. 116/173+ PENPOINTS ........................... 15/435+ CLEANER ...........................15/423 EXTRACTORS OR INSERTERS ...........29/808 INK RETAINER ATTACHED .............401/252+ INK RETAINER INTEGRAL .............401/221 RULING ............................401/256+ RESERVOIR ......................401/233 STYLUS INK RETAINING ..............401/292 WIPER .............................15/423 PENTAERYTHRITOL ..................... 568/853 NITRATED COMPOSITIONS .............149/93 PENTAERYTHRITOL TETRANITRATE ........ 558/485 EXPLOSIVES CONTAINING .............149/93 PENTAGRID HEPTODE CONVERTER ......... 313/300 PENTANEDIOL ......................... 568/853 PENTODE AMPLIFIER .........................313/300 CUTOFF ............................313/300+ DIODE .............................313/298 WITH TWO CATHODES ..............313/5 DIODE TRIODE ......................313/298 TUBE STRUCTURE ....................313/297+ VIDEO .............................313/300 PEPPER DESIGN,SHAKER OR MILL .............D07/591+ HAND MILL .........................241/168+ SHAKER ............................222/142.1+ PEPTIDE SYNTHESIS ................... 530/333 PEPTIDES ............................ 530/300 PRODUCTION BY FERMENTATION ........435/68.1+ INCLUDING RECOMBINANT DNA 435/69.1+ TECHNIQUE ....................435/69.1+ INCLUDING TISSUE CULTURE USE ...435/70.1+ PER ACIDS ........................... 562/1+ ELECTROLYTIC PRODUCTION ...........204/82+ PERAMBULATOR SEE BABY CARRIAGE ...... 280/47.38+ CONVERTIBLE TO WALKER .............280/7.1+ SPRINGS ...........................267/5 PERBORATE ESTERS .................... 560/305 PERBORATES .......................... 423 ELECTROLYTIC PRODUCTION ...........204/85 PERBUNAN T M (SEE SYNTHETIC RESIN OR NATURAL RUBBER) PERCALE ............................. 139/426.R PERCARBONATES ....................... 423/419.1 PERCARBOXYLATE ESTERS ............... 560/302 PERCH FOR FOWL ...................... 119/24+ DESIGN ............................D30/119+ PERCHLORATES ........................ 423/476 COMPOSITIONS CHEMICAL AGENT TYPE ............252/186.1+ DETERGENT TYPE .................252/95+ EXPLOSIVE ......................149/42 EXPLOSIVE ......................149/75+ PERCOLATOR BEVERAGE ................. 99/307+ ELECTRICALLY HEATED ...............219/438+ STAND COMBINED .................219/429+ PITCHER TYPE ......................222 PUMPS .............................417/208+ STRAINER ..........................210/473+ TOP TRANSPARENT ...................220/377.1 PERCUSSION ELECTRIC WELD .....................219/95+ MUSICAL INSTRUMENTS ...............D17/22+ PERCUSSIVE APPLIANCE KINESTHERAPY ............128/54+ FUSES .............................102/272+ SIGNS .............................40/579 PERDNISOLONE, IN DRUG ............... 514/179 PERFORATING (SEE PENETRATING; PUNCH) BY CHEMICAL DISSOLUTION ...........156/644+ DEVICES CIGARS .........................131/253+ DESIGN .........................D19/72+ EARTHENWARE MULTITUBULAR PIPE ..425/290+ ELECTRIC HEATER ................219/229+ FOUNTAIN PEN COMBINED ..........81/9.22 GLASS ..........................65/166 INKER COMBINED, EG TATTOOER ....81/9.22 PLASTIC BLOCK EXPRESSING AND ...425/290+ SHEETS OR BARS .................83 WELL TUBING IN SITU ............166/55 WITH GLASS MFG MEANS ...........65/166 ELECTRIC DISCHARGE ................219/384 RECORDER .......................346/153.1 HANDLING PERFORATED ARTICLE .......414/908* METAL .............................83 BILLET PIERCING ................72/345 EXPANDED .......................29/6.1 MULTIPERFORATED MAKING .........29/6.1+ PERFORATED DEVICES CONTROL MEMBERS SEE TYPE CARDS ........................235/487 MUSICAL INSTRUMENT ...........84/161+ TAPE .........................178/112 TYPEWRITER TAPE ..............40/73+ DRIVE DEVICE FOR TOOL ..........173/90+ RECORDING PRINTING OR TYPING PRINTING .......................101/3.1+ RECORDER .......................346/78+ TELEGRAPH CODE RECORDER ........178/92 TYPEWRITER .....................40/80+ TELEGRAPH CODE TAPE BY TELEGRAPH SIGNALS ...........178/70.R SELECTIVE, BY KEYBOARD .........234 TOBACCO PRODUCTS ..................131/253+ WITH ELECTRIC SPARK OR ARC ........219/384 PERFUME COMPOSITIONS ................ 512 DESIGN ............................D28/5+ ENCAPSULATED ......................512/4 ESSENTIAL OILS ....................512/5 FIXATIVE FOR ......................512/2 GARMENT HANGER COMBINED ...........223/86 HEAD COVERINGS WITH THERAPEUTIC DEVICE, MEDICAMENT OR PERFUME ..2/171.2 PERFUMED JEWELRY ..................63/DIG.2 PRESERVER, STABILIZER FOR .........512/2 SOLIDS, GELS AND SHAPED BODIES ....512/4 PERHALATE ESTERS .................... 560/306 PERHYDROXAMATE ESTERS ............... 560/311 PERHYPOHALITE ESTERS ................ 560/300 PERIMIDINE .......................... 544/249 IN DRUG ...........................514/269 PERIOD METER IN NUCLEAR REACTOR ..... 976/DIG.243 PERIODIC SWITCH ELECTRIC CIRCUIT MAKERS & BREAKERS 20/19.R+ ELECTROMAGNETIC ................335/87+ ELECTRIC DISCHARGE DEVICE SUPPLY CONTROL ........................315/209.R+ PERISCOPES .......................... 359/402+ COMPOUND LENS SYSTEM ..............359/402+ SUBMARINE COMBINED ................114/340 VIEW SIMULATION ...................434/26 PERLITE ............................. 501/28 DIGEST ............................106/DIG.2 PERMANENT MAGNET ALLOY .............................420 PERMANENT PRESS CHEMICALLY MODIFIED FIBER .........8/115.51 COATED ............................427/393.2+ COMPOSOTIONS ......................252/8.6+ PERMANENT WAVE MACHINE FOR HAIR ..... D28/11 PERMEABILITY TUNED TRANSFORMER ...... 336/130 PERMUTATION LOCKS COMBINATION ....................70/315+ KEY ............................70/382+ KEY BITTING ....................70/411 SWITCH COMBINED ................20/42.1+ SWITCH ............................20/42.1+ TYPEWRITER ........................40/100+ VALVES ............................137/269 PERMUTIT T M ........................ 423 PEROXIDES (SEE OXIDES) ALKALI METAL ......................423/582 BLEACHING WITH ....................8/101+ ELECTROLYTIC COATING WITH .........205/333 ELECTROLYTIC SYNTHESIS ............204/83+ ELECTROSTATIC FIELD OR ELECTRICAL DISCHARGE ......................204/175 HEAT PRODUCING COMPOSITIONS .......149/37+ HYDROGEN ..........................423/584+ ORGANIC ...........................568/558+ ACIDS OR SALTS .................562/1+ OXIDIZING .........................252/186.22+ PEROXYNITRATE ESTERS ................ 560/304 PERSPECTIVE PLOTTERS ................ 33/432+ PERSULFONATE ESTERS ................. 560/318 PERSULPHIDES (SEE POLYSULFIDE) PERTHIOBORATE ESTERS ................ 560/305 PERTHIOCARBOXYLATE ESTERS ........... 560/302 PESSARIES ........................... 128/834+ PESTICIDES SEE VERMIN DESTROYING .... D22/120 PESTLE .............................. 241/291 GRAIN HULLING .....................99/600+ MORTAR & PESTLE ...................241/199+ PETROLATUM .......................... 208/20+ TREATMENT OR RECOVERY .............208/24+ PETROLEUM ........................... 208 EMULSION BREAKING .................252/319+ FUELS .............................44 MINERAL OIL ONLY ...............208/15+ FUELS CONTAINING ..................44 LUBRICANTS ........................252/9+ MINERAL OIL ONLY ...............208/18+ PRODUCTION FROM TUNNELS ...................299/2 THERMAL OR SOLVENT EG SECONDARY RECOVERY ........166 WELLS AND RELATED PROCESSES ....166 RECEPTACLES AND STORAGE WITH EXPLOSION PREVENTING DEVICES (SEE EXPLOSION CONTROL) SULFONATES ........................562/33 PETROTHENE T M (POLYETHYLENE) ....... 526/352 PEW ................................. D06/334+ PH ELECTRODE OR PH SENSOR CHEMICAL ANALYSIS, APPARATUS ......422/82.4 PH MEASUREMENTS ELECTROLYTIC ........ 324/438 PHANTOM CIRCUIT WITH LOADING COIL .................178/45 PHARMACEUTICAL PRODUCT .............. D24/100+ PHARYNGOSCOPES ...................... 128/10+ PHASE CHANGER SAME CURRENT IN INPUT & OUTPUT .323/212 USING CONTROLLED ELECTRONIC 328/24 TUBES ........................328/24 CONTROL ELECTRICAL ................323/212 CONVERSION, ELECTRICAL ............363/148+ INDICATION ELECTRICAL .............324/76.77+ MEASURING AND INDICATING ..........324/76.77+ MEASURING TIME ....................968/847 METERS ............................324/76.77+ PHASE INVERTER AMPLIFIERS BALANCED TO UNBALANCED COUPLING 330/116 TRANSISTOR AMPLIFIERS ..........330/301 UNBALANCED TO BALANCED COUPLING 330/117 PHASE LOCKED LOOP HAVING LOCK 331/DIG.2 INDICATING OR DETECTING MEANS ..331/DIG.2 PHASE LOCKED LOOP IN DEMODULATOR 329/325 CIRCUIT ........................329/325 REGULATORS FOR ALTERNATING CURRENT 322/20 GENERATORS .....................322/20+ SHIFT KEYING ......................375/52 SHIFTER ELECTRONIC TUBE TYPE ...........328/155 SHIFTING AND POWER FACTOR CONTROL .323/205 ELECTRONIC TUBE CIRCUIT 315/247 HAVING FACTOR CONTROL ........315/247 ELECTRONIC TUBE CIRCUIT HAVING 315/194 SHIFTING .....................315/194+ METER ADJUSTMENT ...............324/138 WAVE TRANSMISSION TYPE .........333/138+ PHENACETIN .......................... 564/223 PHENANTHRAQUINONE ................... 552/292+ PHENANTHRENE PURIFICATION SEE 585/800+ AROMATIC HYDROCARBON ...............585/800+ PHENANTHRIDINE ...................... 546/108 PHENANTHROLINE ...................... 546/88+ PHENATES (SEE PHENOLS) .............. 568/716+ PHENAZINES .......................... 544/347+ PHENETHICILLIN ...................... 540/341 PHENETIDINE ......................... 564/443 PHENOBARBITAL ....................... 544/305 PHENOLPHTHALEIN ..................... 549/308 PHENOLS (SEE NAPHTHOLS) ............. 568/716+ ALKYLATION ........................568/780+ AMINO .............................564/443+ ADDITION SALTS .................564/280 SULFO ..........................562/58 CARBOXYLIC ACID ESTERS ............560/67+ MONOAZO COMPOUNDS ..............534/660+ HALO ..............................568/774+ MINERAL OIL CONTAINING ............208/2 NITRO .............................568/706+ EXPLOSIVE COMPOSITIONS .........149/55+ EXPLOSIVE COMPOSITIONS .........149/68 EXPLOSIVE COMPOSITIONS .........149/80 EXPLOSIVE COMPOSITIONS .........149/99 EXPLOSIVE COMPOSITIONS .........149/103 EXPLOSIVE COMPOSITIONS .........149/105+ POLYMERS (SEE SYNTHETIC RESIN OR NATURAL RUBBER) SULFO ACIDS .......................562/74 PHENONES ............................ 568/335 PHENOPLAST (SEE SYNTHETIC RESIN OR NATURAL RUBBER) PHENOTHIAZINES ...................... 544/35+ PHENOXAZINES ........................ 544/102+ PHENOXY RESIN (SEE SYNTHETIC RESIN OR NATURAL RUBBER) PHENYLARSONIC ACID .................. 556/73 PHENYLAZONAPHTHYL ................... 534/839+ HEAVY METAL CONTAINING ............534/713+ PHENYLAZONAPHTHYLAZONAPHTHYL ........ 534/832+ PHENYLAZOPHENYL ..................... 534/843+ PHENYLAZOPHENYLAZONAPHTHYL .......... 534/832+ PHENYLDIMETHYLPYRAZOLONE ............ 544/356+ PHENYLENE DIAMIN ............................564/305 PHENYLEPHRINE, IN DRUG .............. 514/653 PHENYLGLYCINE ....................... 562/443 INDOLE PREPARATION FROM ...........548/489 PHENYLHYDRAZINE ..................... 564/310 PHENYLQUINOLIN ...................... 546/173 CARBOXYLIC ACID ...................546/170 PHENYLTOLOXAMINE, IN DRUG ........... 514/651 PHENYLURETHANE ...................... 560/75 PHLOROGLUCIN ........................ 568/763+ PHONES SOUND POWER .......................381/177+ PHONOGRAPH .......................... 369 AUTOMATIC DISK CHANGER ............369/178+ CABINETS ..........................312/8.1+ CHECK OPERATED SWITCH .............194/239 COIN CONTROLLED ...................194 DESIGN .........................D14/173 DESIGN ............................D14/199+ ELECTRICAL REPRODUCING OR 369/128+ RECORDING ......................369/128+ FIGURE TOY COMBINED ...............446/297+ ILLUMINATOR .......................362/87 INDEXING DEVICES ..................369/30 MAGNETIC ..........................360/86 MOTION PICTURE APPARATUS COMBINED .352/32+ MUSICAL INSTRUMENT COMBINED AUTOMATIC MUSICAL INSTRUMENT ...84/4+ COMB ORGAN .....................84/100 ELECTRIC TONE GENERATION EG 84/639 ORGAN ........................84/639 NEEDLE ............................369/173 PHOTOGRAPHIC ......................369/125 RADIO COMBINED ....................369/6 RECIPROCATING TONE ARM MOTIONS ....74/28 RECORD AND COMPOSITION CABINETS FOR ...................312/8.1+ CHANGER ........................369/178 COMPOSITION FOR ................106/37 CYLINDER HOLDER OR CASE ........206 DISC BLANK .....................428/64+ HOLDER OR CASE .................206/309+ DESIGN HOLDER ................D06/407 ENVELOPE .....................229/68.R+ JACKET .......................493/946* MAGNETIC .......................360/131+ MOLDING APPARATUS ..............425/406+ MOLDING PROCESSES ..............264/106+ PACKAGES FOR ...................206/307+ PHOTOGRAPHIC ...................369/284+ PORTABLE CASES .................206/314+ RACKS FOR ......................211/40 SOUND ON FILM ..................369/284+ STRUCTURE ......................428/64+ SYNTHETIC RESIN OR NATURAL 523/174 RUBBER CONTAINING ............523/174 TURNTABLE ......................369/264+ WITH PICTURE ...................352/26 WITH SOUND GROOVE ..............369/272+ SOUND ON FILM .....................369/125+ TELEVISION COMBINED ...............358/189 TURNTABLE TYPE ....................369/264+ STOP MECHANISM .................369/268+ PHOSGENE ............................ 562/847 PHOSPHATASE ......................... 435/21 PHOSPHATE CEMENT .................... 106/690+ PHOSPHATES DETERGENTS CONTAINING .............252/89.1+ ORGANO-PHOSPHATES ..............252/174.16 ELECTROLYTIC SYNTHESIS ............204/90 ESTERS ............................558/70+ CELLULOSE ......................536/62 PHOSPHORUS ESTER GROUP, 558/89+ FORMATION OF .................558/89+ FERTILIZERS CONTAINING ............71/33+ FROTH FLOTATION ...................209/902* INORGANIC .........................423 PHOSPHATIDES ........................ 554/79+ PHOSPHATIZE ......................... 148/253+ PHOSPHINIC ACIDS .................... 562/8+ PHOSPHONIC ACIDS .................... 562/8+ PHOSPHONIUM ......................... 568/9 PHOSPHORESCENT SEE FLUORESCENT APPLICATIONS AND DEVICES ..........250/458.1 COATING PROCESSES .................427/157+ COMPOSITIONS INORGANIC ......................252/301.6R ORGANIC ........................252/301.16 RADIOACTIVE ....................252/625 PHOSPHORIC ACID (SEE PHOSPHATES) .... 423/316 PHOSPHORUS .......................... 423/322 COMPOUNDS INORGANIC ...............23 WAVE ENERGY PREPARATION ........204/157.45 COMPOUNDS ORGANIC .................568/8 HEAVY METAL ....................556/13+ WAVE ENERGY PREPARATION ........204/157.73 EXPLOSIVE OR THERMIC ..............149/29+ COMPOSITION CONTAINING .........149/29+ X-ART COLLECTION ..................436/103 PHOTOCELL ANGLE MEASURING OR AXIAL ALIGNMENT 356/152 BURNER ............................431/79 DIGEST, AUTOMATIC TEMPERATURE & HUMIDITY REGULATION ............236/DIG.15 ELECTRIC LAMP .....................315/149+ ELECTRONIC TUBE ...................250/200+ GAS TUBE ..........................315/149+ GEARING ...........................74 HEADLIGHTS ........................315/83 MIXING OF FLUIDS ..................137/93+ PHOTOGRAPHIC FLUID TREATING APPARATUS CONTROL ..............354/298 PROJECTION PRINTING & COPYING .....355/41 ILLUMINATION SYSTEM OR DETAIL ..355/68 RADIANT ENERGY APPLICATIONS .......250/200+ RANGE OR HEIGHT FINDING WITH LIGHT 356/4+ DETECTOR .......................356/4+ RELAY .............................361/160+ REPEATER, TELEGRAPHY ..............178/70.P SIGNAL ............................340/600+ STOP MECHANISM ....................192/116.5+ LIMIT STOP .....................192/142.A TELEMETERING WITH PHOTOCELL SENSOR 340/870.29 TRACER FOR ........................409/125+ TV PICTURE SIGNAL GENERATOR .......358/212 VELOCITY ..........................356/28+ PHOTOCHROMIC DEVICES ................ 358/902* MEANS TO ALTER LIGHT TRANSMISSION .359/241+ PHOTOCHROMIC GLASS COMPOSITIONS ..... 501/13 PHOTOCOMPOSITION .................... 354 DISPLAY CONTROL ...................345+ PHOTOCONDUCTIVE ..................... 355 COMPOSITIONS ......................430/56+ ELECTROPHOTOGRAPHIC COPIER ELEMENT 355/211+ FATIGUE TREATMENT ..............355/211+ PRECONDITIONING ................355/211+ RESIDUAL CHARGE ELIMINATION ....355/211+ RESISTORS .........................338/15+ PHOTOCOPYING ........................ 355/200+ ELECTROPHOTOGRAPHIC COPIER ........355/200+ EQUIPMENT DESIGN ..................D18/36+ FIBER RODS USED IN ................355/1 MULTIPLE COLOR ELECTRIC ...........355/326.R+ PHOTODUPLICATION .................... 355 ELECTROPHOTOGRAPHIC COPIER ........355/200+ PHOTOELECTRIC ANALYSIS APPARATUS .... 422/82.9 PHOTOELECTRIC CELL .................. D13/165 APPLICATIONS ......................136/291* CAMERA EXPOSURE CONTROL SYSTEM ........354/410+ FOCUSING SYSTEM ................354/402+ CATHODE RAY TUBE CIRCUIT CONTROLLED BY ..........315/10+ WITH PHOTO SENSITIVE ELECTRODE .313/365+ CIRCUITS ..........................136/293* CIRCUITS MISCELLANEOUS ............250/206+ CONTROL OF ELECTRON TUBE CIRCUIT ..315/149+ CONTROLLED ENLARGER ...............355/41 FOR COLOR FILM .................355/38 LIGHT CONTROL ..................355/68 CONTROLLED SWITCH .................361/173+ COPPER OXIDE ......................136/265+ ELECTRONIC TYPE ...................313/523+ GENERATORS, SOLAR CELLS ...........136/243+ LIGHT SENSITIVE CIRCUITS ..........250/214.R+ MECHANICAL PROCESSES OF MAKING SEMICONDUCTOR TYPE .............437 MUSIC TONE GENERATOR USING ........84/639 RESISTIVE TYPE ....................338/15+ SIGNAL IN ELECTRON TUBE CIRCUIT 315/134 CONTROLLED BY ..................315/134 SIGNAL ISOLATOR ...................250/551 SPACE-SATELLITE APPLICATIONS ......136/292* STEREOPLOTTERS ....................250/558+ TELEGRAPHOPHONE EG PHONOGRAPHS 369/100+ USING ..........................369/100+ TELEVISION SYSTEM USING ...........358/209 TESTING, CALIBRATING, TREATING ....136/290* TUBES, ELECTRONIC TYPE ............313/523+ PHOTOELECTRIC PANELS ................ 136/243 PHOTOELECTRIC SYSTEM ................ 250/200+ COUNTING ARTICLES .................377/6 DRINKING FOUNTAIN CONTROLLED ......239/24 ELECTRIC MOTOR CONTROLLED .........318/480 FAULT DETECTOR ....................356/237+ FOUL LINE DETECTOR ................340/556+ GARAGE DOOR CONTROLLED ............49/197+ INSTRUMENTS .......................33/DIG.3 SAFETY STOP MECHANISM .............192/129.A+ STREET LIGHTING CONTROLLED ........315/149+ PHOTOENGRAVING ETCHING MACHINE ...................134 PRINTING PLATES AND PROCESSES PLANOGRAPHIC ...................101/453+ RELIEF AND INTAGLIO ............101/401.1+ STENCIL TYPE ...................101/128.21 PROCESSES .........................430/269+ CHEMICAL ETCHING ...............156/654+ ELECTROLYTIC ...................205/67 PHOTOENLARGERS ...................... 355/18+ PHOTOETCHING PROCESSES MULTICOLOR PRINTING SURFACE MAKING 430/301 RELIEF OR INTAGLIO ................430/306+ PHOTOFLASH COMBUSTION TYPE ...................431/357+ BULB ...........................431/358+ SYNCHRONIZATION WITH SHUTTER ......354/129+ TESTING ...........................73/5 PHOTOFLOOD LAMP ..................... 313/315+ PHOTOGRAMMETRY AERIAL CAMERAS ....................354/65+ DRAWING MAPS FROM PHOTOGRAPHS .....33/20.4+ PHOTOGRAPHY & PHOTOGRAPHIC SEE 354 RADIATION IMAGERY ..................354 BACKGROUND ........................354/291 CALCULATORS .......................235/64.7 CAMERA ............................354 AUTOMATIC EXPOSURE CONTROL .....354/410+ AUTOMATIC FOCUSING .............354/400+ CAMERA CASE .......................D03/33 PHOTOGRAPHIC RECORDER ..........346/107.R+ SEISMIC CAMERAS ................346/107.SC SUPPORTS .......................354/292 CARRIERS FOR PHOTOGRAPHIC GOODS ...224/908* CARTRIDGE OR FILM PACK ............430/496+ CASSETTE ..........................242/71+ CASSETTES, X-RAY ..................378/182+ CHANGE BAGS .......................354/308+ AUXILIARY PLATE MAGAZINE .......354/282 WITH DEVELOPING MEANS ..........354/297+ CHEMISTRY,PROCESSES AND MATERIALS .430 SCREENS ........................430/6+ CINEMATOGRAPHY ....................D16 COLOR .............................430 CAMERAS ........................354/100+ FACSIMILE PREVIEWERS ...........358/527 FILMS ..........................430/541+ FILTER .........................359/885+ CHEMICALLY DEFINED ...........430/4 COMBINED WITH CAMERA .........354/100+ MOTION PICTURE .................352/66 PROCESSES ......................430/357+ SCREENS ........................359/893 CHEMICALLY DEFINED ...........430/7 SHADE MEASURING & TESTING ......356/404 UNPATTERNED FILTER .............359/885+ CONTOUR PHOTOGRAPHY,CHEMICAL ......156/58 COPYING AND PHOTOSTATING ..........355 FILTERS ........................359/885+ PROJECTORS .....................355/18+ DAGUERREOTYPE .....................354/2+ DEPTH ILLUSION MOTION PICTURE APPARTUS ........352/86 MOTION PICTURE PROCESS .........352/38 PHOTOGRAPHIC PROCESS ...........352/86 DESIGN ............................D16 DEVELOPING AND FIXING APPARATUS ...354/297+ EQUIPMENT DESIGN ...............D16/246+ TANKS ..........................354/331 DEVELOPING AND FIXING COMPOSITION .430/468+ DEVELOPER ......................430/464+ HAVING PRESERVATIVE ..........430/490 FIXING BATH ....................430/455 DIRECTION OF FORCE INDICATOR ......33/314 ELECTRIC ..........................354/3 APPARATUS ......................355/200+ DEVELOPING APPARATUS ...........118/644+ DEVELOPING COMPOSITIONS ........430/105+ DEVELOPING METHODS .............430/31+ METHODS ........................430/31+ PLATE CHARGING .................361/225+ SENSITIZING COMPOSITIONS .......430/60+ SENSITIZING ELEMENTS ...........430/31 ELECTROPHOTOGRAPHIC COPIER ........355/200+ EQUIPMENT CASE ....................D03/33 EXPOSURE IDENTIFICATION ...........354/105+ EYE ...............................354/62 TESTING INSTRUMENTS ............351/206 FILMS OR PLATES ...................430/490+ ACETATE RECOVERY FROM ..........536/78 CARTRIDGE ......................430/471 COATING APPARATUS ....................118 PROCESSES ....................430/935* WITH STRUCTURE ...............354/275+ CONTAINER FOR UNDEVELOPED FILM .206/455+ DIGEST, DRYING & GAS OR VAPOR 34 CONTACT ......................34 HOLDERS ........................354/276+ NITRATE RECOVERY FROM ..........536/40 SPLICER ........................D08/70.1 TRANSPARENCY ...................356/443+ WIPERS .........................15/100 X RAY HOLDERS ..................378/167 FINISHED PHOTOGRAPH ...............428/195 FLASH BULB ...........................431/357+ FLASH LAMP .....................D16/239+ FLASH SYNCHRONIZERS ...............354/129+ LANTERNS EG SAFELIGHTS ............362/803* LENS ..............................D16/134+ LIGHT METER .......................D16/238 LIGHTS ............................362/3+ IN ENLARGER ....................355/67+ LAMP SUPPLY CIRCUIT ............315 SHUTTER CONTROLLED .............354/129+ SHUTTER OPERATOR CONTROLLED ....354/129+ MAGAZINE CAMERA ...................354/174+ MANIPULATIVE PROCESSING ...........354 METAL RECOVERY FROM PHOTOGRAPHIC MATERIAL HYDROMETALLURGY ................75/713 PYR0METALLURGY .................75/635 COMBINED WITH HYDROMETALLURGY 75/417 MODELS ............................354/292 MOTION PICTURE ....................352 OPTICS ............................354 PACKAGING OPTICAL OR PHOTOGRAPHIC OBJECTS ........................206/316.1+ ASSEMBLAGE OR KIT ..............206/578 PHOTOCHEMICAL ETCHING .............430/299+ PHOTOENGRAVING PLATES CHEMICAL ETCHING ...............156/654+ ELECTROMECHANICAL ETCHING ......358/299 PHOTOFLASH ........................354/129+ PHOTOGRAPH CORNER MOUNT ...................493/952* MAPPING & AERIAL RECTIFYING ....353/5+ OPERATING DEVICE ...............235/91.C RELIEF MODELING ................156/59 VIEWER .........................D16/221+ PHOTOPLATE CARRIERS ...............294/137+ PICTURE FRAME .....................40/152+ DESIGN .........................D06/300+ PLAYING CARDS .....................273/292+ DESIGN .........................D21/42+ PRINT DRYERS .........................34/143+ WASHER .........................354/297+ PRINTER ENLARGING APPARATUS ............355/18+ PROJECTION .....................355/18+ PRINTING ..........................355 PROCESSING,MANIPULATIVE ...........354 PROJECTOR .........................D16/221+ RANGE FINDER ......................D16/220 RECORDER ..........................346/107.R+ RECORDING BANK DEPOSITS ...........346/22 REPRODUCTION EQUIPMENT ............D18/36+ RETOUCHING ........................354/348+ SAFE LAMP OR LIGHT ................362/803* SCREEN ............................D16/241 SEQUENTIAL STATIONS FOR CLEANING & 134/122.P LIQUID CONTACT .................134/122.P WITH WORK TRANSFER OR FLUID APPLYING DEVICES .............134/64.P SOUND RECORDING OR REPRODUCING ....369/125+ SOUND RECORDING RECORD ............369/284+ SPECTROSCOPY ......................356/302 STANDS RETOUCHING .....................354/349 STEREOSCOPIC CAMERA ...............354/112+ VIEWER .........................359/466+ STUDIOS ...........................354/290 SYNCHRONIZING FLASH WITH SHUTTER ..354/129 TELEGRAPH RECORDER ................178/15 CODE ...........................178/90 TELESCOPE, MICROSCOPE OR PERISCOPE 359/363 WITH PHOTOGRAPHIC MEANS ........359/363 TELEVISION ........................358/345+ RECEIVER .......................358/244 COLOR ........................358/332+ TRANSPARENCY VIEWER ...............40/361+ TRIMMER CUTTERS ...................83 TYPESETTING SUBSTITUTE ............354/5+ VIEWER ............................D16/221+ VIGNETTING CONTACT PRINTING ...............355/125+ ENLARGING ......................355/40+ X RAY .............................378 DEFLECTED X OR GRAMMA RAY ......378/70 PHOTOGRAVURE ........................ 430/307+ PHOTOLITHOGRAPHIC PRINTING EQUIPMENT D18/36+ PHOTOMETERS ......................... 356/213+ PHOTOMETRIC ANALYSIS APPARATUS ...... 422/82.9 COMBINED WITH COPYING CAMERA ......355/68 FOR COLOR PICTURES .............355/38 FLICKER BEAM ......................356/217 MICROPHOTOMETERS ..................356/213+ PHOTOSENSITIVE COATING APPLYING ..................430 PHOTOTYPOGRAPH ...................... 354/5+ PHOTOVOLTAIC DEVICES SEE PHOTOELECTRIC PHTHALAZINES ........................ 544/237 PHTHALEINS .......................... 549/308+ PHTHALIC ACID ....................... 562/480+ ANHYDRIDE .........................549/247 OXIDATION OF AROMATIC COMPOUNDS 549/248+ PHTHALIDE ........................... 549/307 PHTHALIMIDES ........................ 548/473+ PHTHALOCYANINES ..................... 540/122+ PHTHALONITRILE ...................... 558/421 PHYSICAL TRAINING OR TESTING ........ 434/247+ PHYSICS TEACHING .................... 434/300+ PIANO ............................... 84 ACTIONS ...........................84/236+ AND FORTE DEVICES FOR PIANOS ......84/216+ AUTOMATIC PLAYER PIANO ............84/13+ BENCH WITH MUSIC HOLDER ...........312/35 CASES .............................84/177+ COMBINED WITH ORGAN ...............84/172 DESIGN ............................D17/7 DUET PIANO STOOLS .................297/232+ ELECTRIC TONE GENERATION ..........84/600+ EXERCISING DEVICE FOR PIANISTS ....84/467 HAMMER ACTION .....................84/235+ HARP ..............................84/258 PEDAL MECHANISM ...................84/225+ PEDESTAL SEAT .....................D06/334+ PIANISSIMO OR FORTE DEVICES .......84/219 PIANO HAMMER FELTING ..............144/29 RESONANCE APPARATUS ...............84/189+ STOOLS ADJUSTABLE CONCURRENT VERTICAL AND HORIZONTAL MOVEMENTS .....108/138+ DUET ...........................297/232+ VERTICALLY ADJUSTABLE ..........248/161+ STRINGING .........................84/197+ TUNING ............................84/454 ELECTRICAL .....................84/458 VIOLIN ............................84/256+ PICCOLO ............................. 84/384 PICK ICE ...............................30/164.5+ CARRIER ........................224/232 HARVESTING .....................299/24+ MAKING BLANKS AND PROCESSES ...........76/109 DIES MILLSTONE .........................125/42 MINERS ............................125/43 CARRIER ........................224 HAND CARRIER .................294/137+ MINING ............................299/79+ STRINGED MUSICAL INSTRUMENT .......84/320 TOOTH .............................132/321+ PICKER AND PICKING ARTICLE DISPENSING ................221/210+ CIGAR AND CIGARETTE MAKING ........131/109.1 CORNSTALK TYPE ....................56/103+ MOTORIZED ......................56/13.5+ WITH CUTTER ....................56/64+ COTTON ............................56/36+ MOTORIZED ......................56/12.5 MOTORIZED ......................56/13.5+ FLY SHUTTLE .......................139/159+ CHECK ..........................139/161.R+ PLURAL SHED ....................139/436 GRIPPER SHUTTLE ...................139/438 KEYLOCK ANTIPICK ..................70/419+ KEYS ..............................70/394 TRAPPING .......................70/390 LABEL .............................156/569+ NEEDLE ............................139/440 PADS FOR ENVELOPE GUMMER ..........118/236 PIANO FELT ........................84/460 STRINGED MUSICAL INSTRUMENT .......84/320+ AUTOMATIC ......................84/8+ TEXTILE FIBER PREPARING ...........19/80.R+ TUFTING SEWING MACHINE ............112/80.1+ PICKET OR STAKE ANIMAL RESTRAINT ..................119/786+ BARBING ...........................227 FENCE LIKE, TYPE OF MAGNETIC FIELD IN 376/121 GAS PLASMA CONTROL ...........376/121 METALLIC .......................256/22 WIRE ...........................256/34 PICKLING APPARATUS FOOD ....................99/516+ CLEANING ..........................134 COMPOSITIONS FOOD ...........................426/654+ METAL ..........................252/142+ ELECTROLYTIC OF METAL .............204/141.5+ ETCHING ...........................156/625+ FRUITS AND VEGETABLES .............426/626 MEAT ..............................426/331 PICKUP BALERS OR BUNDLERS ................56/341+ LOCOMOTIVE DRIVER .................105/33 RAILWAY CAR DROP TYPE .............104/122 RAILWAY MAIL ......................258 SCALES COUNTER WEIGHT .............177/248 VACUUM CLEANER NOZZLE ATTACHED ....15/415.1+ PICKUP ELECTRIC ..................... 310/15+ GENERATOR .........................310/15 ELECTROMAGNETIC ................310/15+ PIEZOELECTRIC ..................310/311+ PHONOGRAPH TYPE ...................369/135+ SEISMIC TYPE ......................367/178+ SONAR SUBMARINE TYPE ..............367/141+ VIBRATION TESTING APPARATUS .......73/649+ PICNIC BOX OR KIT ........................206/541+ LUGGAGE FOR CARRYING ..............190/12.R PICOLINE ............................ 546/348 PICRAMIC ACID ....................... 564/441 PICRIC ACID ......................... 568/710 PICROLONIC ACID ..................... 548/368.1