Index to the US Patent Classification

Index to the US Patent Classification

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 any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

Enter class/subclass code:


RECEPTACLE (SEE BAG; BOTTLE; BOWL; BOX; CASE; CONTAINER;
 CUP; DISH; HOLDER; PAIL; TRAY; VESSEL)
  ACIDS .............................206/524.1+
  AGITATING TYPE ....................366/341
  BAGGAGE ...........................190
  BALL MILL .........................241/179+
  BATH STRAINER TYPE ................4/290+
  BATHTUB SEE BATHTUB ...............4/538+
  BATTERY ...........................429/163+
     CELL ASSEMBLY SUPPORT FEATURE ..429/186
     CONTAINER ONLY .................429/176
     COP CONTAINER ..................429/164+
     COVER ONLY .....................429/175
     HANDLE OR LIFTING DEVICE .......429/187
     PLURAL COVERS ..................429/177
     REACTIVE METALLIC CAN ..........429/166
       SEAL FEATURE .................429/172+
     SEAL FEATURE ...................429/174
     TERMINAL FEATURE ...............429/178+
     TUBULAR ELECTRODE ..............429/164+
  BEAKER SEE BEAKER .................422/104
  BED, FOR USE WITH .................5/503.1+
     BED WITH DRAWERS ETC ...........5/308
     SOFA BED .......................5/58
  BOTTLES OR JARS ...................215
  CABINET STRUCTURES ................312
  CLOSET BOWL ATTACHMENT ............4/341+
  COIN HANDLING, EG CHANGE MAKERS ...453
  COLLECTION ........................232
  CONCENTRATING EVAPORATORS .........159
  CUTLERY HANDLE TYPE ...............30/125
     RAZOR ..........................30/86
  DEPOSIT AND COLLECTION ............232
     CABINET COMBINED ...............312/211+
  DISCHARGING HAND TYPE .............294/26.5
  DISPENSER .........................222
  DRY CLOSET ........................4/479+
     INCLOSED .......................4/476+
  DRYING CHAMBER TYPE ...............34/179+
     ROTARY .........................34/108+
  EARTH BORING TOOL COMBINED ........175/308
  ELECTRIC BATTERY ..................429/163+
  ELECTRIC PLUG BOX OR HOUSING ......174/50+
  ELECTRIC WIRING ...................439/501+
  EMPTYING DEVICES ..................414/403+
  EVAPORATIVE COOLED, POROUS COVER ..62/316
  EVAPORATIVE COOLED, POROUS WALL ...62/315
     POROUS WALL ....................312/31+
  FILLING AIDE ......................141/391
  FIRE ESCAPE STORING ...............182/93+
  FIRE EXTINGUISHER .................169
     PORTABLE .......................169/30+
  FLEXIBLE LADDER STORING ...........182/70+
  FOOD AND BEVERAGE .................99/467
     BEVERAGE INFUSER ...............99/323
     COOKING FILLED RECEPTACLES .....99/359+
     MOLDING TYPE EG PIE & CAKE PANS 99/426
     STORAGE ........................99/516
  FOREHEARTH ........................266/166
  HEATING CRUCIBLES .................432/262+
     FOR METALLIFEROUS MATERIAL .....266/275+
     METAL CASTING DEVICE COMBINED ..164/335+
     WITH POURING MODIFICATION ......222
  HOISTING BUCKET TYPE ..............294/68.1+
  HOT WATER BOTTLE OR ICE BAG TYPE ..607/114
  ICE COOLED, PORTABLE ..............62/457.1+
     PACKAGE TYPE ...................62/371+
  INKWELL (SEE INKWELL)
  INSTRUMENT STERILIZER .............422
  LAMINATED MAKING ..................156
  LID APPLYING ......................53/287+
     WITH COMPACTING OF CONTENTS ....10/54+
  LINING AS BY LAMINATING ...........156
  LOCK ATTACHMENT ...................70/63+
  LUGGAGE OR BAGGAGE ................190
  MEDICAMENTS .......................604/403+
  METAL WORKING REEL ................242/83
  METALLIC ..........................220
  MILKING MACHINE CAN ...............119/14.46
  NUT CRACKER COMBINED ..............99/568+
  ORIFICE GROMMET OR BUSHING ........16/3
  PAPER .............................229
     ENVELOPE .......................229/68.R+
     PAPERBOX BOX ...................229/100+
  PAPER TYPE FILLING AND CLOSING ....53/467+
  PIANO CASE MUSIC STORING ..........84/181
  PLANT OR FLOWER ...................47/66+
     BIO DEGRADABLE .................47/74+
     IRRIGATOR ......................47/79+
     TERRARIUM ......................47/69+
     WINDOW BOX .....................47/68+
  PLUMBING FOR SINK OR BATH .........4/679+
  PORTABLE WITH BURGLAR ALARM .......116/99
  RACKS .............................211/126+
     WALL OR WINDOW MOUNTED .........211/88
  RELOCATABLE WITH CHARGING &        414/332
     DISCHARGING ....................414/332
  SAFE AND VAULT TYPE ...............109
  SHEET METAL MAKING ................413
  SIFTER TYPE .......................209/233+
  SINK ..............................4/619+
  SPECIAL OR PACKAGES ...............206
  SPITTOONS .........................4/258+
  SPOOL HOLDER ......................242/137+
  STATIC MOLD .......................249/117
  STRATIFIERS .......................209/422+
  SUPPORTS ..........................248/128+
     BAG HOLDERS ....................248/95
     BRACKET TYPE ...................248/311.2+
     DESK AND INKWELL COMBINED ......108/26.2
     INKSTAND DISPENSING ............222/577
     PASTE TUBE TYPE ................248/108
     STAND EG INKSTAND
       MOVABLE RECEPTACLE ...........248/128
       STATIONARY INKWELL ...........248/146+
     SUSPENDED TYPE .................248/318
  TESTING ...........................73/52
  TEXTILE WASHING MACHINE ...........68
     DEFORMABLE FOR SQUEEZER TYPE ...68/96
     TUMBLER TYPE ...................68/139+
  TWINE HOLDER ......................242/146
  WASH TUB ..........................68/232+
     WITH SCRUBBING SURFACE .........68/233
  WATER HEATING TYPE ................126/373+
  WELL ..............................166/162+
     HOIST BUCKET TYPE ..............294/68.1+
  WHEELED ...........................280
     BARROWS OR TRUCKS ..............280/47.17+
  WOODEN ............................217

RECLAIMING (SEE RECOVERY)
  CELLULOID .........................536/38+
  CELLULOSE ESTER FILM SCRAP ........536/76+
  COTTON WASTE ......................8/141
     APPARATUS ......................68/1
  FATS AND OILS .....................554/175+
  LUMBER DENAILING ..................254/18
  PAPER .............................162/4+
  RUBBER ............................521/41+
  SCRAP METAL SALVAGING .............29/403.1+
  SYNTHETIC RESIN OR NATURAL RUBBER .521/40+
  TIN SCRAP
     HYDROMETALLURGY ................75/716
     METALLURGY .....................75/401+
  TOBACCO ...........................131/96

RECOIL
  CHECKS (SEE SHOCK) ................188/266+
     ORDNANCE .......................89/42.1+
  OPERATED
     FIREARMS AND GUNS ..............89/125+
  PACKAGE RETAINER, RECOIL-TYPE .....206/825*
  PADS FOR SHOULDER ARMS ............42/74
     DESIGN .........................D22/111

RECOMBINATION (SEE GENETIC 435/172.3
 ENGINEERING) .......................435/172.3
  X-ART COLLECTION ..................935*


RECORD
  CHANGER ...........................369/178+
  CONTROLLED CALCULATOR .............235/419+
  DISK FOR PHONOGRAPH ...............369/272+
  DISK HOLDER .......................206/309+
     HAND CARRIER ...................294/158
  FORMING SOUND GROOVES IN ..........264/106+
  SHAVING ...........................82/1.11
  X-ART COLLECTION ..................425/810*


RECORDING AND RECORDERS ............. 346
  AERIAL PROJECTILE TARGET ..........273/348.1+
  BOREHOLE INDICATOR ................33/304+
  BURNING ...........................346/76.R
  CALCULATOR ........................235/58.R+
  CHARTS ............................346/134+
  COATING PROCESS ...................427/146
  CRT ...............................346/158
     ELECTRICAL MEMORIES ............365/118
  DIRECTION INDICATOR ...............33/331
  DISPENSER COMBINED ................222/30
  DYNAMOMETER .......................73/862.27
  ELECTRIC SPARK ....................346/162
  ELECTROLYTIC ......................346/165
  EQUIPMENT DESIGN ..................D14
  FACSIMILE
     OPTICAL ........................358/296+
     RECEIVER .......................358/296+
  FLOAT GAUGE .......................73/312
  FLUID PRESSURE GAUGE ..............73/713+
  HOLOGRAMS .........................359/1+
     ELECTRICAL CIRCUITS ............365/125
  LIQUID PURIFICATION OR SEPARATION .210/85+
  LOCK POSITION .....................70/433+
  MAGNETIC BUBBLES ..................365/1+
  MAIL LETTER BOX ...................232/18
  MUSIC .............................84/461+
  IN NOTATION FORM ..................984/254+
  PENS ..............................346/140.R
  PRINTING ..........................101
  PYROGRAPHIC .......................346/76.R
  RADIOACTIVE .......................346/152
  RAILWAY
     BLOCK SIGNAL ...................246/107
     CAB SIGNAL OR TRAIN CONTROL ....246/185
     TRAIN POSITION .................246/123
  REGISTER COMBINED .................235/2+
  REPRODUCER COMBINED
     ELECTRICAL WAVE FOR MEASURING ..324/111+
     FOR ELECTRICAL TRANSIENT .......324/102
  SCALE .............................177/2+
  SOUND .............................369
     ACOUSTIC IMAGE .................367/7
     CABINET ........................312/9.1+
     COMPOSITION ....................106/37
     ELECTRIC MUSIC INSTRUMENT ......84/600+
     ELECTROFORMING PROCESS .........205/68
     INDEXING DEVICES ...............369/30
     MAGNETIC TAPE OR WIRE ..........360/88+
     MANUFACTURE ....................29/169.5
     MOLDING DEVICE .................425/406+
     MOLDING PROCESS ................264/106+
     PHONOGRAPH ELECTRIC ............369/128+
     RACK ...........................211/40
     SEISMIC MECHANICAL .............346/7
     TALKING PICTURE APPARATUS ......352/1+
     TAPE WINDING MEANS .............242/179+
  STRIP SPROCKET HOLE TESTING .......73/157
  TAPE WINDING MEANS ................242/179+
     UNIDIRECTIONAL .................242/55.17+
  TELEGRAPHY
     CHEMICAL & ELECTROLYTIC ........178/62
     PAGE PRINTING ..................178/28+
     PHOTOGRAPHIC ...................178/15
     PRINTING SELECTOR ..............178/34
     RECEIVER .......................178/89+
     REED PRINTER ...................178/48
     SIPHON .........................178/91
     TRANSMITTER ....................178/17.R+
     TYPE WHEEL PRINTER .............178/35
  TELEPHONE
     CALLING NUMBER .................379/142
     CONVERSATION TIME ..............379/114+
     TELEGRAPHOPHONE ................369/132+
  TELEVISION ........................358/335+
     CAMERA WITH RECORDER ...........358/906*
     COLOR ..........................358/310+
     MAGNETIC .......................360/33.1+
     PAUSE CONTROL ..................358/908*
     TRACK SKIPPER ..................358/907*
  TELEVISION SYSTEM COMBINED ........358/296+
  THERMOPLASTIC, STORAGE RETRIEVAL   365/126
     OF INFORMATION .................365/126
  THERMOPLASTIC, VISUAL RECORD ......346/151
     TELEVISION .....................358/344
       COLOR ........................358/310
       FACSIMILE ....................358/300
  TIME
     PLURAL RECORDINGS ..............346/45+
     PRINTING OR PUNCHING ...........346/80+
  TRANSPARENCY ......................365/127
  VERIFYING .........................73/156
  VOTING MACHINE ....................235/50.R
  WIRE ..............................346/150
     SOUND TYPE .....................360/89
  X RAY PHOTOGRAPHY .................378

RECOVERY (SEE MATERIAL RECOVERED)
  COATING EXCESS ....................427/345
  DYES ..............................8/440
  FATS AND OILS .....................554/175+
  INORGANIC ACTINIDE COMPOUNDS ......423/249+
  NUCLEAR MATERIALS .................376/189
  NUCLEAR MATERIALS .................376/201
  NUCLEAR MATERIALS .................376/308
  SCRAP METAL SALVAGING .............29/403.1+
  SEPARATION OF SOLIDS ..............209
  SOLVENT APPARATUS .................68/18.R


RECTANGULAR PROPORTIONER ............ 33/DIG.9

RECTIFIERS AND RECTIFYING ........... D13/110+
  BEAM POWER AMPLIFIER ..............313/298
     WITH TWO CATHODES ..............313/5
  DISTILLATION ......................203
     APPARATUS ......................196
     APPARATUS ......................202
     LIQUIDS ........................203
     MINERAL OIL ....................208/350+
  DOUBLER HIGH VACUUM ...............313/306+
     WITH TWO CATHODES ..............313/1
  ELECTRICAL ........................363/13+
     BARRIER LAYER COATING ..........437
     BARRIER LAYER COMPOSITIONS .....252/62.3R
     ELECTROLYTES ...................252/62.2
     ELECTROLYTIC DEVICES ...........361/436
     FULL WAVE HIGH VACUUM ..........313/306
     LAMP OR ELECTRONIC TUBE SUPPLY .315/200.R+
     MANUFACTURE ....................29/25.1+
       PROCESS ......................437
     X RAY CIRCUIT SUPPLY ...........378/101
  GAS AND LIQUID CONTACT APPARATUS ..261
  GAS LIQUEFACTION ..................62/42+
     PROCESS ........................62/32+
     PROCESS, PLURAL SEPARATION .....62/24+
  HALF WAVE SYSTEM ..................363/13+
     CIRCUIT INTERRUPTER FOR ........20
     DYNAMOELECTRIC MACHINE .........310/10+
     ELECTRONIC TUBE FOR ............313/317+
     GAS TUBE TYPE ..................363/114+
     POWER PACKS ....................307/150
     VACUUM TUBE TYPE ...............363/114+
     WITH FILTER ....................363/39+
     WITH VOLTAGE REGULATOR .........363/84+
  MERCURY VAPOR SYSTEM ..............363/114+
     RECTIFIER CONTROL ONLY .........315/246+
  MINERAL OILS ......................208/350+
  VACUUM OR GAS TUBE ................313


RECUPERATOR
  DISTILLATION RETORT COMBINED ......202/111
     GAS BENCH ......................202/148
     HORIZONTAL .....................202/140
     INCLINED .......................202/130
     VERTICAL .......................202/122
  FURNACE
     FUEL BURNED IN PERMEABLE MASS ..431/170
  GAS HEATING FURNACES ..............432/179

RED LEAD ............................ 423/619

REDOX CATALYST ...................... 526/915*

REDUCER
  COMMUTATION SPARKING ..............310/220+
  MACHINES
     CABINETS .......................607/81+
     EXERCISING .....................482
     MASSAGE ........................128/24.R+
  PIPE JOINT ........................285/177
     SCREW ..........................285/392
  PRESSURE (SEE PRESSURE, REGULATOR)
  SOCKET WRENCH .....................81/185

REDUCTION (SEE HYDROGENATION)
  AMINES PRIMARY PRODUCTION BY ......564/415+
  APPARATUS FOR ORES ................266/168+
  CATALYSTS TREATMENT ...............502/100+
  CHEMICAL AGENTS ...................252/188.1
  DETERGENT .........................252/105
  HYDROGEN PRODUCTION BY ............423/648.1
  INORGANIC SULFIDE PRODUCTION BY ...423
  IRON AND ALLOYS ELECTROTHERMIC ....75/10.1+
  OF METAL ORES AND METAL COMPOUNDS .75
  SEPARATION DISTILLATION ...........203/32
  SULPHUR PRODUCTION BY .............423/567.1
  THERMIT TYPE ......................75/959*


REED
  MUSICAL
     ACCORDIAN ......................84/376.R
     HARMONICA ......................84/377+
     NONORGAN REED INSTRUMENTS ......84/375+
     ORGAN REED PIPES ...............84/350
     REED ORGANS ....................84/351+
     TOY ............................446/207+
     TUNING REED FOR FURNISHING
       PITCH ........................84/456
     WOOD WINDS .....................84/380.R+
  STATION SELECTIVE SIGNALLING ......340/825.39
     TELEPHONE CALL TYPE ............379/360+
  TELEGRAPH .........................178/47+
  TELEPHONE CALL TRANSMITTER ........379/360+
  TEXTILE LOOM REED .................139/192
     MOVEMENT THEREOF SEPARATE FROM
       RACEWAY MOTION ...............139/191
     TERRY REED .....................139/26
  VALVE .............................137/855+
  VIBRATION SENSING .................73/651

REEDING ............................. 28/201+

REEF, ARTIFICIAL .................... 405/21+

REEFING SAILS ....................... 114/104+


REEL
  AGRICULTURAL IMPLEMENTS
     CUTTING AND GATHERING ..........56
     LINE WIRE DRIVEN PLANTER .......111/44
     POTATO DIGGER ..................171/111+
     THRESHER STRAW CARRIER .........460/85
  ANTENNA ...........................343/877
  ANTISMUT PRINTING DEVICE ..........101/418
  BAKING OVEN COMBINED ..............432/141
  BODY SUPPORTED ....................224/162
  CABLE DRUM TYPE, DRIVEN ...........254/266+
  CARRIERS ..........................242/85+
  CHANGEABLE EXHIBITOR ..............40/514+
     CALENDAR TYPE ..................40/116+
  ELECTRIC CORD .....................191/12.2R+
     SUSPENDED SUPPORT ..............248/328+
  FISHING ROD COMBINED ..............43/20+
     DESIGN .........................D22/137+
     REEL SEAT ......................43/22
  FISHING TYPE ......................242/223+
     ATTACHMENTS ....................242/322
  FLEXIBLE LADDER ...................182/73+
  HOLDER ............................D03/30.1+
  HOSE TYPE WITH SPRAY DEVICE .......239/195+
     PORTABLE .......................239/722+
  MEASURING TAPE ....................33/761+
  MIDLINE TIGHTENER .................24/71.2
  MOTION PICTURE FILM WINDING .......242/179+
     WITH PROJECTOR .................352/124
  PACKAGES ..........................206/389
  PLUMB BOB .........................33/393+
  RESISTORS .........................338/79
     WITH MOTION PICTURE PROJECTOR ..352/124
  REWIND MOTION PICTURE FILM ........242/210
  SHEET WEB OR STRAND DRYING
     APPARATUS ......................34/153
  SOUND RECORDING OR
     REPRODUCING TAPE DRIVE .........242/179+
  SOUNDING ..........................33/715+
  STRAND TYPE FIRE ESCAPES ..........182/236+
  STROP COMBINED ....................76/81.4
  TAPE MEASURE ......................D10/71
  WINDING AND REELING TYPE ..........242/77+
     AUTOMATICALLY CONTRACTING ......242/63
     BELT TYPE ......................242/67
     REVOLUBLE CARRIER ..............242/64
     TRUNDLE TYPE ...................242/94
     WINDING DRUM OR SAND REEL TYPE .242/117


REELING ............................. 242
  INFORMATION-BEARING WEB MACHINE
     CONVERTIBLE ....................242/179+
  TEXTILE WARP PREPARING ............28/190+
  WINDING & .........................60/905*

REEVES DRIVE ........................ 474/8+

REFILLING (SEE FILLERS; FILLING)
  BY DISPENSING MEANS ...............141/21
  FOUNTAIN PEN FILLING MECHANISMS ...401/143+
  PREVENTION OF
     BOTTLES ........................215/14+
     DISPENSERS .....................222/147+
     SPECIALLY RELATED DISPENSER
       AND RECEIVER .................141/348+

REFINING (SEE PURIFIERS)
  ALCOHOLIC .........................99/277.1+
  APPARATUS
     MINERAL OIL ....................196
  CARBOHYDRATE MANUFACTURE ..........127/34+
     STARCH MANUFACTURE .............127/65+
     SUGAR MANUFACTURE ..............127/42+
  ELECTROLYSIS ......................204/59.R+
  FATS OILS AND WAXES ...............554/175+
  FATTY OILS ........................554/175+
     RECOVERING .....................554/175+
  GLASS MAKING IN ...................65
  METAL CASTING APPARATUS COMBINED ..164/266
  METALS ............................75
  MINERAL OILS ......................208/177+
     CONVERSION COMBINED ............208/46+
     DEASPHALTING ...................208/309
     GUM OR GUM FORMER REMOVAL ......208/255+
     METAL CONTAMINANT REMOVAL ......208/251.R+
     NITROGEN REMOVAL ...............208/254.R
     ORGANIC ACID REMOVAL ...........208/263
     PHENOL REMOVAL .................208/263
     SULFUR REMOVAL .................208/208.R+
     SWEETENING .....................208/189+
  PAPER MAKING ......................241
  SMELTING COMBINED .................266/161+
  SUGAR .............................127


REFLECTORS SEE MIRRORS & REFLECTORS
  ANTENNA ...........................343/912+
     COLLAPSIBLE ....................343/915
  DESIGN ............................D26/118+
  GLASS BEAD TYPE ...................359/534+
  NUCLEAR REACTOR INCLUDING          376/220
     FOR NEUTRONS ...................376/220
  NUCLEAR REACTOR INCLUDING .........376/347
     FOR NEUTRONS ...................376/346
  RADAR .............................342/5
  REFLECTION REDUCING FILMS ON       359/580+
     OPTICAL SURFACES ...............359/580+
  REFLECTOMETERS ....................356/445+
     CHEMICAL ANALYSIS, APPARATUS ...422/82.5
  SOLAR HEAT COLLECTING .............126/684+
  WARNING REFLECTOR TRIANGLE FOR     40/903*
     HIGHWAY USE ....................40/903*
     DESIGN .........................D10/114

REFLEX KLYSTRON ..................... 315/5.18+

REFLUX, VAPOR BARRIER ............... 156/DIG.9

REFRACTOMETER ....................... 356/128+

REFRACTORS
  ELECTRIC LAMP HAVING ..............313/110+
  FLUORESCENT DEVICE HAVING .........250/485.1
  ILLUMINATING DEVICE TYPE ..........362/326+
  ILLUMINATING REFLECTOR COMBINED ...362/327
  LENSES ............................359/642+
  PRISMS ............................359/831+


REFRACTORY MATERIAL
  BUILDING BLOCK ....................52/596
  CHECKER BRICK FURNACE STRUCTURE ...165/9.1+
  COMPOSITIONS ......................501/94+
     CARBIDE CONTAINING .............501/87+
  GAS GENERATOR INCLUDING ...........48/74
  METAL HEAT TREATMENT ..............148/668
  MOLDING PROCESSES .................264/56+
  PYROMETALLURGY ....................75/611+

REFRIGERATORS(SEE COOLER AND COOLING)
  CABINET STRUCTURE COMBINED ........312/236
     SHOWCASE TYPE ..................312/116
  CAR ...............................62/239+
     BODY STRUCTURE .................105/355+
  COMPOSITIONS TO PRODUCE
     CHEMICAL .......................62/532+
     CHEMICAL REACTION, SOLIDS
       DISSOLVING ...................62/4
     FUEL ...........................62/7
     PROCESSES COMBINED .............62/114
     PROCESSES COMBINED, SORPTION    62/112
       TYPE .........................62/112
     REFRIGERANTS BRINES ............252/71+
     REFRIGERANTS CRYOGENIC AND
       OTHER ........................252/70
     REFRIGERANTS EVAPORATIVE .......252/67+
  COMPRESSOR MUFFLER ................181/403*
  DESIGN OF MACHINE .................D15/81+
  FOOD REFRIGERATION OF .............426/524+
  FOOD SAFES WITH OPEN EVAPORATIVE
     COOLING ........................312/31+
  LIGHTS FOR ........................362/92+
  OCCUPANT TYPE VEHICLE .............62/244
  PRODUCT PRODUCED BY ...............62/1
  SHOWCASE TYPE .....................62/259.3
  SPACE SUIT ........................62/259.1
  WEIGHING SCALE COMBINED ...........177/143


REFUSE (SEE TRASH; WASTE)
  FUEL ..............................44/605+
     BRIQUETTE ......................44/589+
  FUEL BURNING ......................110/235+
     STOVES AND FURNACES ............126/222+
  HYDROCARBON MIXTURE FROM ..........585/240
  INCINERATION ......................110/235+
     COMBINED WITH STOVE ............126/222+
  RECEPTACLES
     CLEANING .......................15/56+
  STOCK MATERIAL FROM ...............428/903.3*

REGENERATED CELLULOSE ............... 536/57+
  COMPOSITIONS ......................106/168
  DYEING WITH AZO ...................8/662+
  FILAMENT FORMING ..................264/187+
  FORMATION IMPURITIES REMOVAL ......8/137.5
  SWELLING OR PLASTICIZING OF .......8/130.1
  VISCOSE PRODUCTION OF .............536/60+

REGENERATION (SEE REVIVIFICATION)
  HEAT OF GAS REFRIGERATION CYCLE ...62/6
  ION EXCHANGE LIQUID PURIFIER ......210/269+
     EXTERNAL REGENERANT SUPPLY .....210/190+
  MOTIVE FLUID ......................60/526+
     PROCESS ........................210/670+
  TONE MUSICAL INSTRUMENT HAVING ....84/600+

REGENERATION MEDIA .................. 435/240.54+


REGENERATIVE
  AMPLIFIER .........................330/112
     BETWEEN ADJACENT STAGES ........330/89
     CATHODE IMPEDANCE FEEDBACK .....330/93
     IN PUSH PULL TYPE ..............330/82
     IN SOME PATH AT DIFFERENT       330/101
       FREQUENCIES ..................330/101
     INCLUDING NEGATIVE FEEDBACK ....330/104
  DEMODULATOR SYSTEMS
     AMPLITUDE MODULATION TYPE ......329/367
  FURNACE
     ALKYNE SYNTHESIS USING .........585/535
     DIOLEFIN SYNTHESIS USING .......585/602
     OLEFIN SYNTHESIS USING .........585/634
  RADIO RECEIVER ....................455/336+

REGENERATOR
  DISTILLATION
     THERMOLYTIC RETORT SYSTEM ......202/105+
  EVAPORATOR ........................159/24.1
  FURNACE
     HEATED AIR FED TO BURNER .......431/167
  HEAT EXCHANGE .....................165/4
  VAPOR INHALERS ....................128/202.26

REGGIO PATENT COLLECTION ............ 60/913*

REGISTERING
  APPARATUS
     TELEPHONE CALL COUNTING ........379/111+
     TELEPHONE SWITCHING CONTROL ....379/280+


REGISTERS ........................... 235
  AUTOGRAPHIC
     CASH RECORDER ..................235/4+
     STRIPS .........................281/5+
     STRIPS AND LEAVES ..............281/2
     STRIPS AND LEAVES MANIFOLDING ..462/8+
     STRIPS MANIFOLDING .............462/25+
  CLOSURE ...........................49/38+
  DISPENSER COMBINED ................222/23+
  DISPLAY CONTROL ...................377/112
  DYNAMOMETER .......................73/862.27
  FARE OR TICKET ....................235/33+
  FLOAT GAUGE .......................73/310
  HEATING AND VENTILATING ...........454/284+
     DESIGN .........................D23
  IN TELEPHONE SYSTEM ...............379/111+
  LIQUID PURIFICATION OR SEPARATION .210/85+
  LOCK CONDITION ....................70/436+
  MAIL LETTER BOX ...................232/18
  POSITION
     MUSICAL INSTRUMENT .............84/136+
     PNEUMATIC CONVEYOR .............406/62+
     PRINTING MACHINE BED AND PLATEN 101/286
     PRINTING MACHINE ROTARY ........101/248
     SHEET MATERIAL ASSOCIATING .....270/51
     TYPESETTING ....................276/15
     TYPESETTING AND DISTRIBUTING ...276/3+
     WEB OR STRAND FEEDING ..........226/10+
  RECORDER COMBINED .................346/14.R+
  SCALE .............................177/15+
  SENDERS TELEPHONE .................379/288
     OPERATOR CONTROLLED ............379/261
  SHIFT .............................377/64
  TELEPHONE CONNECTION CONTROL ......379/280+
  VENTILATION .......................454/284+

REGISTRATION PLATE
  AUTOMOTIVE DESIGN .................D20/13+


REGULATING
  APPARATUS
     FOR ELECTRIC MOTORS ............318
     FOR ELECTRIC RAILWAY CARS ......105/49+
     TRANSFORMERS ...................336
  ELECTRICITY
     ARC LAMP .......................314
     GENERATOR SYSTEM ...............322
     LAMP GENERALLY .................315
     MOTOR SYSTEM ...................318
  MECHANICAL CLOCK ..................968/103+

REGULATION
  CONTINUOUS CURRENT MOTORS .........318
  OF ALTERNATING CURRENT REPULSION   318/725
     MOTORS .........................318/725
  OF ELECTRIC POWER DISTRIBUTION ....307
  SPEED IN INDUCTION MOTORS .........318/799+
     PLURAL SPEED MOTORS ............318/772+
     ROTOR SPEED SECONDARY CIRCUIT   318/823+
       IMPEDENCE CONTROL ............318/823+
     WITH STARTING CONTROL ..........318/779


REGULATOR
  BAND SAW TENSION ..................83/816+
  BEVERAGE INFUSER ..................99/305
  BRAKE .............................188/266+
  CARBON CHEMISTRY
  DEPTH
     MARINE MINES ...................102/412+
     TORPEDO ........................114/25
  DRAFT
     BOILER .........................122/38
     FURNACE ........................110/147+
     FURNACE SPARK ARRESTER .........110/123
  ELECTRICITY (SEE CONTROLLER,
     CIRCUIT; CONTROLLER, ELECTRIC)
     ARC FURNACE ....................373/60+
     AUTOMATIC SYSTEM ...............307
     BATTERY CHARGING CIRCUIT .......320/29
     BATTERY CHARGING CIRCUIT .......320/49+
     BATTERY CHARGING GENERATOR .....320/27
       FIELD WINDING ................320/64+
     BATTERY CHARGING GENERATOR      320/72
       STRUCTURE ....................320/72
     CONDENSER ......................361/271+
     CURRENT ........................323
     DISTRIBUTION ...................307/15
     ELECTRIC GENERATION ............322
     ELECTRODE CURRENT OR VOLTAGE ...314/135
     ELECTRODE FEED ELECTROMAGNETIC .314/115+
     ELECTRODE FEED ROTARY MOTOR ....314/69+
     ELECTRODE SHUNT ................314/10+
     ELEVATOR OPERATOR ACTUATED .....187/43
     ELEVATOR SPEED .................187/39
     GAS AND VAPOR LAMP .............313/567+
     HEATER ELECTRIC ................219/482+
     INDUCTION FURNACE ..............373/138+
     INPUT RESPONSIVE ...............323/299
     LAMP ...........................315/291+
     LOCOMOTIVE .....................105/61
     MUSIC INSTRUMENT ...............84/600+
     PHASE CONTROL SYSTEM ...........323
     POTENTIAL FOR DYNAMOS ..........322/28
     PUMP ...........................417
     RAILWAY BLOCK SIGNAL ...........246/34.R+
     RAILWAY CAR PROPULSION .........104/288+
     RESISTANCE .....................338
     RESISTANCE FURNACE .............373/135+
     RHEOSTAT .......................338/68+
     SPEED ..........................361/236+
     SURGICAL .......................607/149+
     TRANSFORMER ....................336
     VOLTAGE SYSTEM .................323
     WAVE TRANSMISSION ..............333
     X RAY ..........................378/108
  FEED
     BOILER FUEL AND WATER ..........122/446+
     DIBBLING PLANTER ...............111/95+
     ELECTRODE BRAKE ................314/82
     ELECTRODE CONSUMABLE PLURAL ....314/37
     ELECTRODE CONSUMPTION TYPE .....314/59+
     ELECTRODE MAGNETIC OPERATOR ....314/113+
     ELECTRODE SEPARATING MECHANISM .314/65+
     ELECTRODE SHUNT CIRCUIT ........314/11+
     HILL PLANTER ...................111/17
     PAPER WEB FORMING ..............162/259
     PNEUMATIC CONVEYER .............406/127+
       AUTOMATIC ....................406/29+
     SOLID MATERIAL COMMINUTION .....241/34+
     SPRINKLER PIPE .................239/562+
  FERMENTATION PROCESS ..............435/289+
  FLUID FLOW BAFFLE .................138/37+
  LIQUID PURIFICATION OR SEPARATION .210/143+
  LOCOMOTIVE TRACTION ...............105/73+
  MUSICAL KEYBOARD TOUCH ............84/439+
  NUCLEAR REACTION CONTROL ..........376/207
  PENDULUM ELECTRIC CLOCK ...........368/166
  POWER PLANT, CONDITION RESPONSIVE .60/660+
  POWER PLANT, SYSTEM OPERATION .....60/645+
  PRESSURE (SEE PRESSURE)
     CALENDER ROLL ..................10/168+
     FERMENTATION PROCESS ...........435/289+
     FLUID BY VALVE CONTROL .........137/505+
     FLUID FLOW METER COMBINED ......73/199
     ILLUMINATING GAS DISTRIBUTION ..48/191
     WATER HEATING SYSTEM ...........237/65
  PUMP ..............................417/279+
     FANS ...........................416/170.R
     GAS ............................417/279+
     GAS JET FLUE ...................417/157
     GAS ROTARY .....................415
     JET ............................417/182+
  RAILWAY CABLE RAIL TENSION ........104/117
  SHEAR CUT .........................30/200+
  SPEED (SEE SPEED RESPONSIVE OR
     CONTROLLED)
  TEMPERATURE AND HUMIDITY ..........236
     ANIMAL WATERING DEVICE .........119/73
     ARC LAMP .......................313/11+
     AUTOMATIC HEAT EXCHANGING ......165/13+
     AUTOMATIC REFRIGERATION ........62/132+
     FERMENTATION PROCESS ...........435/289+
     INTERNAL COMBUSTION ENGINE .....123/41.2+
     SUPERHEATER ....................122/479.1
     TOBACCO TREATMENT ..............131/303
  TIMEPEICE
     BALANCE ........................368/170+
     COMPENSATING MEANS .............368/202
     ELECTRICAL FREQUENCY ...........368/200
     ELECTRICAL RATE ................368/186
     PENDULUM .......................368/181+
  TYPEWRITER CARRIAGE ...............40/337+


REINFORCEMENT
  BLADES CUTTING ....................30/348
  BUSHINGS ..........................16/2+
  CHECKS LABELS TAGS ................40/27
  CLOTHING
     POCKET .........................2/248
     REINFORCING COLLAR CUFF BOSOM ..223/4
     STOCKINGS ......................2/241
     STOCKINGS KNITTED ..............66/182
     UNDER WEAR .....................2/400
  COMB BACK .........................132/155
  FABRIC ............................2/261
     MAKING LAMINATED ...............156
     SEAMS ..........................112/402+
  FERRULES ..........................16/108+
  LADDER ............................182/217+
  LINING THIMBLES ...................16/2+
  MASONRY AND SETTABLE MATERIAL
     ARCHES .........................52/88
     BEAM OR GIRDER .................52/723
     BLOCKS  MODULES ................52/600+
     COLUMN POLE, POST ..............52/722+
     MOLD MATERIAL ..................164/411
     OPENWORK .......................52/633+
     PAVEMENT BLOCK .................404/45
     PAVEMENT SHEET .................404/70
     PIPES ..........................138/175+
     POST FENCE .....................256/51
     PRECAST MODULE .................52/600+
     PRESTRESSED ....................52/223.1+
     PROCESSES ......................264/271.1
     RADIATING FROM COLUMN ..........52/260
     RAILWAY TIE ....................238/85+
     RIBBED .........................52/319+
     RIBBED SLAB ....................52/602
     ROADWAY ........................404/134+
     RODS ...........................52/720+
     SAFE OR VAULT WALL .............109/83
  PACKING JOINT .....................277
  PIPE CONDUIT ......................138/172+
  RECEPTACLE
     FLEXIBLE BAG ...................383/119
     METALLIC .......................220/639+
     METALLIC EDGE ..................220/640+
     SAFE ...........................109/83
     TRUNK ..........................190/25
  RINGS .............................16/108+
  SHOE INSOLE .......................12/20
  SPOONS ............................30/328
  SWITCH POINT RAILWAY ..............246/437
  TEXTILE, REINFORCING OR TIRE CORDS 57/902*
  THIMBLES ..........................16/108
  TIRES
     INNER TUBE .....................152/511
     TIRE ...........................152/393+
     TIRE AND VALVE STEM ............152/430
  VALVE HEAD ........................251/358
  VEHICLE FRAME .....................296/30
  WHEELS
     HUBS ...........................301/106+
     SPOKES .........................301/83
     SPOKES PLURAL SERIES ...........301/77

REINS ............................... 54/36
  CHECK .............................54/16+
  GUARDS ............................54/73
     DESIGN .........................D30/141
  HOLDERS
     DESIGN .........................D30/141
     VEHICLE ATTACHMENT .............280/182+
     WHIP SOCKET COMBINED ...........280/177
  HOLDS .............................54/74
  SUPPORTS AND GUARDS VEHICLE TYPE ..280/181

REJECT CATCHER OR DEFLECTOR
  GLASS MAKING APPARATUS ............65/165
  REFRIGERATION PRODUCER
     IMPURITY REMOVAL ...............62/195

REKNITTING .......................... 66/1.5

RELAXATION OSCILLATOR ............... 331
  DRIVEN TYPE .......................328/193+


RELAY
  AUTO
     HEADLIGHT SYSTEMS ..............315/77+
     HORN SYSTEMS ...................340/425.5+
  ELECTRIC
     AMPLIFIER ......................330
     CASING .........................20/302.1
     DIRECTIONAL SAFETY SYSTEM ......361/1+
     ELECTRIC THERMAL RESPONSIVE
       SYSTEM .......................236/78.R
     ELECTROMAGNETIC SWITCH .........335/2+
     ELECTROMAGNETIC SWITCHING
       SYSTEMS ......................361/139+
     FREQUENCY DIVISION REPEATERS ...370/75
     HIGH SPEED .....................335/2+
     LIGHT WAVE REPEATERS ...........359/174+
     MOTOR OPERATED .................335/68+
     PULSE OR DIGITAL REPEATERS .....375/3
     RAILWAY SIGNALLING SYSTEM ......246
     SYSTEMS ........................361/139+
     SYSTEMS SAFETY .................361/1+
     TELEGRAPH REPEATERS ............178/70.A+
     TELEPHONE CENTRAL LINE-SIGNAL
       CONTROL ......................379/317+
     THERMAL CURRENT ................337/14+
     THERMAL RESPONSIVE SYSTEM ......236/68.R
     TIME DIVISION REPEATERS ........370/97
  PNEUMATIC DISPATCH ................406/181+
  PRESSURE MODULATING RELAYS OR
     FOLLOWERS ......................137/82+
  STRUCTURE ELECTROMAGNETIC
     ELECTROMAGNETIC SWITCH .........335
     ELECTROTHERMAL SWITCH ..........337/14+
  TEMPERATURE AND HUMIDITY CONTROL
     BY .............................236
  TIME LAG ..........................20/33.R+


RELEASE & RELEASERS SEE UNCOUPLING
  ARTICLE ...........................221/289+
  BRAKES AND CLUTCHES
     BRAKES .........................188
     CHECK CONTROLLED LOCK RELEASE ..194
     CLUTCH AND BRAKE ...............192/12.R
     CLUTCH OPERATORS ...............192/82.R+
     CLUTCHES .......................192/30.R+
     DRIVE RELEASE AND BRAKE ........192/144+
     FLUID PRESSURE BRAKE MOTOR
       RELEASING ....................303/68+
     FLUID PRESSURE SYSTEM
       SYNCHRONIZING ................303/36
     OVERLOAD RELEASE ...............192/150
     PHONOGRAPH STOP MECHANISM ......369/268
     SPEED RESPONSIVE CLUTCH
       OPERATOR .....................192/103.R+
     TRANSMISSION CONTROL AND
       AUTOMATIC BRAKE ..............192/7+
     TYPEWRITER FEED MECHANSIM ......40/334+
  COATING
     COMPOSITIONS ...................106/2
     METHODS ........................427
  LOAD-RESPONSIVE RELEASE ...........403/DIG.3
  OVERLOAD (SEE CLUTCH; CRANK; LATCH; LEVER; OVERLOAD; TRIP)
     AUTOMATIC TRIP MECHANISMS ......74/2
     ELEVATOR CABLE .................187/72
     HAND WHEELS ....................74/556
     HARPOON TYPE HAY FORK ..........294/126+
     HOIST LINE SLING ...............294/75+
     INTERMITTENT GRIP MECHANICAL
       MOVEMENTS ....................74/111+
     KEY HOLDING CATCH FOR LOCKS ....70/459
     LEVER CARRIED PAWL .............74/535+
     LEVER DETENT AND RELEASE .......74/529
     LOCK EMERGENCY RELEASE .........70/465
     LOCKS ..........................70
     MECHANICAL GUN TRIGGERS ........124/31+
     MUSIC LEAF TURNERS .............84/486+
     PITMAN AUTOMATIC RELEASE .......74/584
     RAILWAY SWITCHES AND SIGNALS ...246
     ROTATABLE PLATFORM TRAP ........43/72
     STORE SERVICE CABLE PROPULSION .186/16
     TILTABLE PLATFORM TRAP .........43/70
     TILTING HAY FORK ...............294/124
     TIME LOCK EMERGENCY RELEASE ....70/274
     TIME SWITCH LATCH TRIP .........20/40+
     TOY MONEY BOX FIGURE OR
       MECHANISM ....................446/9
     TRACTION RAILWAY CABLE GRIPPERS 104/207
     TYPEWRITER LINE SPACING ........40/565+
     VALVE ..........................251/66+
     WELL TORPEDO LOWERING ..........102/313
  QUICK RELEASE .....................403/DIG.4