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:


I-BEAM .............................. 52/729
  CUTTER ............................83/DIG.2

ICE ................................. 62
  BAG ...............................383/901*
     CARRIER ........................294
     DESIGN .........................D24/207+
  BOATS .............................114/43
  BORING ............................175/18
  BOXES .............................62/459+
     AIR CONTROLLER COMBINED ........62/420+
     PORTABLE RECEPTACLE ............62/457.7
     PORTABLE, COMMODITY CONTAINING .62/371+
  BREAKERS ..........................114/40+
  BUCKET ............................D07/603
  CONTROL ON WATERWAYS ..............405/61
  CRUSHERS ..........................241
     HAND TOOL ......................D07/682
     HOUSEHOLD APPLIANCE ............D07/374
  CRUSHING APPARATUS ................241
  CUTTING (SEE NOTES TO) ............30/164.5
     ELECTRICALLY HEATED CUTTER .....30/140
     HAND HELD ......................30/140
     HEATED CUTTER ..................62/320+
     ICE CREAM FREEZER WITH .........62/321
     MACHINE ........................83/171
     MACHINES CUTTING, X-ART ........83/915.3*
     SAWING .........................83/915.3*
  FOOD ..............................426/101+
  GAS SOLIDIFIERS ...................62/8+
  GROOVING ..........................83/875+
  HARVESTING ........................299/24+
  HOUSES AND CELLARS ................62/459+
     AIR CONTROLLING COMBINED .......62/420
     STRUCTURAL INSTALLATION ........62/259.1+
  MACHINE FOR PRODUCING .............62/340+
     AUTOMATIC ......................62/135+
  MAKING (SEE CONGELATION) ..........D15/80
  PICKS AND SHAVERS
     CHIPPER OR PICK ................30/164.5
     GENERAL ........................241
     HARVESTING CUTTERS AND PICKS ...299/24+
     HOLDER FOR .....................224/232+
     ICE PICK OR CHIPPER ............30/164.5+
     KNIVES AND SCRAPERS WITH        30/136
       MATERIAL HOLDER OR DISPOSAL ..30/136+
  PREVENTION ON AIRCRAFT ............244/134.R
  PREVENTION ON COOLING TOWER .......261/DIG.86
  PREVENTIVE COATING ................106/13
  PROCESSES OF MAKING ...............62/66+
  PROTECTING MARINE STRUCTURE FROM ..405/211
  REMOVAL FROM STREETS ..............37/197
  THAWING
     COMPOSITIONS FOR ...............252/70
     FROM STREETS ...................37/227+
     PIPES ..........................138/32+
     RIVER AND HARBOR ...............405/61
  TRAY DESIGN .......................D15/90

ICE CREAM ........................... 426/101
  AGITATOR FOR FREEZER ..............366/144+
  CABINETS FOR ......................220/DIG.8
  CANS FOR REFRIGERATION ............62/433
  CONE ..............................426/139
     CARRIERS FOR CONES .............229/932+
     DESIGN .........................D01/116+
  CUP ...............................D01/116
  CUTTING ...........................83
  DESIGN ............................D01
  DISHER, CONE SHAPING ..............425/118
  FREEZER ...........................62/340+
     AUTOMATIC ......................62/135+
     TRAY ...........................366/144
     WITH ICE BREAKER ...............62/321
  MACHINE DESIGN ....................D15/82
  MOLDING ...........................426/515+
  PACKAGE VENDING CABINETS ..........221
  PROCESS OF FREEZING ...............62/66+
  PRODUCT AND MAKING ................426/565+
  SCOOP .............................425/221
  SCOOP .............................425/276+
  SCOOP OR PLUNGER ..................425/187
  SERVING TOOL ......................D07/681
  STICK, ON A .......................D01

ICE SKATES .......................... 280/11.12+
  ATTACHMENTS FOR ...................280/809+
  DESIGN ............................D21/225
  SCABBARDS .........................280/825

ICHTHYOL ............................ 562/33

ICING ............................... 426/659
  EDIBLE COATING APPLYING MACHINES ..118/13+
  PROCESSES FOR APPLYING ............99

ICONOMETER .......................... 33/227+
  CAMERA VIEWFINDER .................354/219+
  RANGE & REMOTE DISTANCE FINDING    356/3
     OPTICS .........................356/3


ICONOSCOPE .......................... 313/367+
  TELEVISION SYSTEM USING ...........358/217+

IDENTIFICATION
  AGENTS, CHEMICAL OR BIOLOGICAL     436
     ANALYSIS .......................436
  ARM BAND ..........................40/1.5
  BADGES ............................40/1.5+
     DESIGN .........................D20/22+
  CARD ..............................428/13
     ENVELOPE FOR ...................206
     WITH PRINTING ..................283/74+
  CHECKS LABELS AND TAGS ............283/81
  DYEING ............................8
  ELECTRICAL CONDUCTORS .............174/112
  FINGERPRINT, COMPARISONS ..........356/71
  FRAUD PREVENTING COATING ..........427/7
  KEY LOCKS .........................70/460
     KEY ............................40/330
  OF MEDICINE OR POISON .............424/2+
  PLUG TOBACCO ......................131/368
  PRINTED MATTER ....................283/74+
  SIGNALS AND INDICATORS ............116
  TAG ...............................283/74+
  WRITING ON PHOTOGRAPHIC FILM ......354/105+
     DURING X-RAY EXPOSURE ..........378/165

IDLERS (SEE MACHINE ON WHICH USED)
  BEARING ...........................384/262
  BELT ..............................474/166+
  METAL ROLLING
     MILL ...........................72/199+
     ROLL ...........................72/199
  PULLEYS ...........................474/166+
     BELT TIGHTENER .................474/101+

IGEPON T M .......................... 554/85+


IGNITER AND IGNITION SEE LIGHTER
  ALARMS OPERATED BY ................116/104+
     ELECTRICAL .....................340/385
  AMMUNITION AND EXPLOSIVE DEVICES
     CARTRIDGES .....................102/470+
     COMPOSITIONS FOR ...............149/108.6
     LAND MINES .....................102/424+
     MARINE MINES ...................102/416+
     SHELLS .........................102/200+
  BURNER ............................431
     AUTOMATIC CONTROL OF ...........431/18
     ELECTRICAL .....................431/254+
     ELECTRICAL .....................431/258+
     MECHANICAL .....................431/129+
     MECHANICAL .....................431/254+
  CATALYTIC .........................431/268
     POCKET TYPE ....................431/147
  CHEMICAL ..........................431/267+
  CIGARETTE, POCKET TYPE ............431/129+
  CIGARETTE, POCKET TYPE ............431/144+
     BY ELECTRICAL MEANS ............361/235+
     DESIGN .........................D27/141+
     ELECTRICAL RESISTANCE ..........219/260+
     TOBACCO APPLIANCE WITH .........131/234
     TOBACCO WITH ...................131/351
  COMBUSTION ENGINE COMBINED WITH
     ROTARY PISTON ..................123/210+
  ELECTRIC (SEE ENGINE)
     BLASTING CARTRIDGE .............102
     CARTRIDGES .....................102/202.2+
     EXPLOSIVE LAND MINES ...........102/424+
     FLASH LIGHTS SOLID FUEL ........431/357+
     FLASH LIGHTS SOLID FUEL ........431/357+
     FLUID FUEL BURNERS .............431/254+
     FLUID FUEL BURNERS .............431/256+
     INTERFERENCE SUPPRESSOR         338/66+
       RESISTOR .....................338/66+
     RESISTANCE TYPE ................219/260+
     SHELLS .........................102/206+
     SPARK TYPE .....................361/253+
     TIME CONTROLLED ................431/73
  ELECTRIC SPACE DISCHARGE DEVICES
     CONSUMABLE ELECTRODE TYPE ......314
     ENERGIZING SYSTEMS .............315
  ENGINE ............................123/594+
     DYNAMO COMBINED ................290
     SPARK TIMING CONTROL ...........123/406+
     STARTING .......................123/186.1+
  FIRE KINDLING .....................431/267+
  FLASHLIGHT COMBINED ...............431/357+
     ELECTRIC PRIMER IGNITES ........431/362
  FLUID-FLINT LIGHTER ...............431/144+
  FRICTIONAL ........................431/267+
  FUSE ..............................493/948*
  IGNITING DEVICES & FUEL ...........44
  LAMP SYSTEM COMBINED WITH SPARK ...315/178+
  MAKE AND BREAK FOR
     INTERNAL COMBUSTION ENGINES ....123/153
  MATCHES ...........................44/507+
     BOXES AND PACKAGES .............206/96+
       DESIGN .......................D09/414+
       MATCHBOOK DESIGN .............D09/304
     COMPOSITIONS ...................149
     SCRATCHERS .....................44/643
  MOTOR VEHICLE, INTERNAL COMBUSTION 123/143.R+
     ENGINE EQUIPPED ................123/143.R+
     SAFETY BELT RESPONSIVE TO
       IGNITION CIRCUIT .............180/270
  PERCUSSIVE ........................431/267+
  RECEPTACLE COMBINED
     CIGARETTE OR CIGAR DISPENSER ...221/136+
     MATCH BOXES AND PACKAGES .......206/96+
     POCKET CIGARETTE OR CIGAR
       CONTAINERS ...................206/85+
  REIGNITING HOT SPOT ...............431/347
  SPEADER FOR IGNITION WIRE MANIFOLD D08/357
  TIMING ............................431/86+
  TOBACCO OR TOBACCO USERS
     APPLIANCES COMBINED
     ASH TRAYS ......................131/234
     ASH TRAYS DESIGN ...............D27/143+
     CIGAR END CUTTER ...............131/249
     CIGARS OR CIGARETTES ...........131/185
     PIPES OR CIGARETTE HOLDERS .....131/185

IGNITRON (SEE ELECTRIC SPACE DISCHARGE DEVICE)

ILLUMINATED
  CHANGEABLE EXHIBITOR ..............40/452
     COMBINED UNIT ..................362/253
  CLOCK .............................368/82
  COMPACT ...........................132/288
     DESIGN .........................D28/64.1
     ELECTRIC .......................362/135
  DISPENSER .........................222/113
  FARE BOX ..........................232/13
  FOUNTAIN ..........................239/18+
  HOUSE NUMBER ......................40/584+
     SELF-LUMINOUS ..................250/462.1
  KNOBS .............................362/100
  LIQUID LEVEL GAUGE ................73/293
  PICTURE FRAME .....................40/152.2
  RADIO DIAL ........................116/241+
  REFRIGERATORS .....................62/264
  SEMAPHORE ARM .....................246/483
  SIGN ..............................40/541+
     COMBINED SOURCES OF  362/253
       ILLUMINATION .................362/253
     FIBER OPTIC, IE LIGHT PIPE .....40/547
  TRAP ..............................43/113
  VEHICLE DIRECTION INDICATOR
     PIVOTED ........................116/54
     ROTATABLE CASING ...............116/49
     ROTATABLE POINTER ..............116/48
  WEIGHING SCALE ....................177/177+

ILLUMINATING
  GAS (SEE GAS, HEATING & 
     ILLUMINATING) ..................48
     LIQUEFYING APPARATUS ...........62/36+
     LIQUEFYING PROCESS .............62/11+
     PURIFYING ......................423/210


ILLUMINATION ........................ 362
  AMMUNITION AND EXPLOSIVE DEVICES
     WITH TRACER ....................102/513
  BEDROOM LIGHTING ..................362/801*
  BUOYS .............................441/13+
  CABINETS WITH .....................312/223.5
  DENTAL OR SURGICAL SPOTLIGHT ......362/804*
  DIAGNOSTIC TYPE REFLECTOR .........128/22
  DIRECTION INDICATOR ...............33/348
  DISPENSER .........................222/113
  DRYING APPARATUS ..................34/88
  EGG CANDLING ......................356/52+
  ELECTRIC LAMP SUPPLY SYSTEMS ......315
  ELECTROPHOTOGRAPHIC COPIER ........355/228+
  ENDOSCOPES ........................128/6+
  FANS WITH .........................416/5
  FOUNTAINS .........................362/101
  GAGS SURGICAL .....................128/13
  GAS GENERATION ....................48
  HORTICULTURAL .....................362/805*
  LIGHT EMITTING DIODE ..............362/800*
  LIQUID LEVEL OR DEPTH GAGE ........73/293
  OPTICAL TESTING ...................356
  ORNAMENTAL OR DECORATIVE LIGHTING .362/806*
     CANDLE IMITATION ...............362/810*
     FIGURE .........................362/808*
     GLOBE ..........................362/809*
     PSYCHEDELIC ....................362/811*
     STAR ...........................362/807*
  PARACHUTE FLARES ..................102/337+
  PHARYNGOSCOPES ....................128/11
  PHOTO SAFE LAMP ...................362/803*
  PIVOTED TYPE SPECULA ..............128/18
  PYROTECHNICS ROCKETS ..............102/347+
  RADIO DIAL ........................116/241+
  SHELLS WITH .......................102/513
  SIGNS .............................362/812*
  STOVES HEATING AND ILLUMINATING ...126/97
  STOVES ILLUMINATING LID OR TOP ....126/213
  SWITCH POSITION OR CONDITION       362/802*
     RESPONSIVE .....................362/802*
  TESTING ILLUMINATING FLUIDS .......73/36
  TONGUE DEPRESSORS .................128/16
  TORCHES ...........................102/336+
  TOYS WITH ELECTRIC ................446/485+
     VEHICLE SIMULATION .............446/438+

ILLUMINATORS SEE ILLUMINATION


ILLUSION
  AMUSEMENT .........................472/57+
     BUILDING STRUCTURE .............472/74
  RAILWAY AMUSEMENT VEHICLE .........104/83
     OPTICAL ........................104/84
     PHYSICAL .......................104/85

IMAGE ANALYSIS ...................... 382

IMAGE DISSECTOR TELEVISION .......... 358/209
  CATHODE RAY TUBE SYSTEM ...........358/217+
     SCANNING .......................358/199+
     TUBE STRUCTURE .................313/373+

IMAGE, GENERATION, CONTROL .......... 395/100+
  ANIMATION .........................395/152
  THREE DIMENSIONAL .................395/119+

IMAGE, LATENT ....................... 428/29+
  ELECTROPHOTOGRAPHIC COPIER ........355/210+
  FORMED OR DEVELOPED ...............427/145
  HIDDEN ANSWER .....................434/328
  HIDDEN ANSWER .....................434/348
  ILLUMINATED SIGNS .................40/541+

IMBIBITION PRINTING ................. 101/464

IMBRICATION
  ELECTROPHOTOGRAPHIC COPIER ........355/322

IMIDAZOBENZODIAZEPINE ............... 540/562


IMIDAZOBENZODIAZEPINONE ............. 540/498

IMIDAZOLES .......................... 548/335.1+
  FUSED POLYCARBOXYLIC IMIDE ........546

IMIDAZOLIDINES ...................... 548/300.1+

IMIDAZOLIDONES ...................... 548/316.4+

IMIDAZOLINES ........................ 548/347.1+

IMIDES (SEE AMIDES)
  INDOLE NUCLEUS CTG ................548/473+
  NAPHTHOSTYRILS ....................548/437
  POLYCARBOXYLIC ....................546

IMIDIC ACID ESTERS .................. 558/6+
  HYDROXIMIDIC ACID ESTERS ..........558/7
  PSEUDO UREAS ......................558/8

IMIDIC ACID HALIDES ................. 562/802+
  ISOCYANIDE DIHALIDES ..............562/803


IMITATIONS (SEE ARTIFICIAL)
  CANDLE FIXTURE OR SUPPORT .........362/392
  CANE UMBRELLA CASE ................135/18
  FIREARM, FLASHES LIGHT ............362/112
  MARBLE IN PLASTIC .................264/73+
  PLURAL MODULES ON WALL
     STATIC MOLD FOR MAKING .........249/16
  STAGE .............................472/57+
     PROPS ..........................472/75+
  STATIC MOLD SHAPED TO
     SIMULATE PRODUCT OF NATURE .....249/55
  STITCH ON SHOE ....................12/32
  WATER PISTOL TYPE DISPENSERS ......222/78+

IMMERSING AND IMMERSION
  ABRADING ..........................51/7
     SCOURING .......................51/17+
  BOILER OR DEEP FAT FRYER TYPE .....99/403+
  CLOTHES WASHING ...................68
  COATING ...........................118/400+
     METHOD .........................427/430.1+
  DISH AND SOLIDS WASHING ...........134/43+
  ELECTRIC HEATER ...................392/497+
  ELECTRIC HEATER ...................219/523
  FILLING PORTABLE RECEPTACLES ......141/110+
  STERILIZING .......................422/301+
  TUMBLER CLEANING WITH BRUSHING ....15/76
  WATER HEATER ......................126/348
  WELDING APPARATUS .................427/430.1+

IMMUNIZING
  ANTIGENS AND SERA .................424/88+
  CELLULOSE FIBERS ..................8/120+
  FERMENTS ..........................435/245

IMMUNOASSAY ......................... 436/818*

IMMUNOGLOBULINS ..................... 530/387.1


IMMUNOLOGICAL TESTING ............... 436/500+


IMPACT
  ABSORBTION BY FLEXIBLE BARRIER
     BY FLEXIBLE BARRIER ............49/9
     BY PLASTIC DEFORMATION .........188/371+
     BY RESILIENT DEFORMATION .......188/268
  COMMINUTOR
     BY FLUID STREAM ................241/39+
     BY MATERIALS IMPACT ............241/5
     BY MOVING SURFACES .............241/27
     HAMMER MILLS ...................241/185.5+
  DRIVE DEVICE FOR TOOL .............173/90
  MEASURING .........................73/492
  METAL EXTRUDING BY ................72/267
  MINING MACHINE ....................299/69
  OPERATED OR OPERATION
     ASSEMBLING OR DISASSEMBLING ....29/275
     BUMP RELEASE OF CLOSURE ........49/364
     CLUTCH .........................173/93.5+
     CUTTER .........................30/277
     MAIL CATCHER LOAD RELEASE ......258/25
     MAIL CATCHER LOAD RELEASE
       COMBINED .....................258/11+
     SOLID MATERIAL SEPARATION ......209
     VALVE ..........................251/76
  PLATES ............................198/956*
  RECORDERS .........................346/7
  SCALE REMOVAL BY ..................29/81.15
  SUPPORT MOVABLE OR DISENGAGEABLE
     ON IMPACT OR OVERLOAD ..........248/900*
  TESTING BY ........................73/12.1+
     HARDNESS .......................73/82
     SHEAR STRENGTH BY ..............73/844
  TOOLS
     ASSEMBLING OR DIASSEMBLING .....29/275+
     AWL OR PRICK PUNCH .............30/367
     CUTTER BLADE MECHANISM .........30/277
     DRILLING BITS ..................175/414+
     ELECTRIC MOTOR .................310/15+
     ELECTRIC MOTOR SYSTEMS .........318/114
     HOLDERS ........................81/487
     INTERNAL IMPACT ELEMENT ........81/463+
     JACK HAMMER TYPE ...............175/189
     MINING OR DISINTEGRATING
       IN SITU ......................299/94
     PUNCH ..........................30/367
     PUSHER OR PULLER EG EXPLOSIVE
       OPERATED .....................29/254+
     STONEMASONS ....................125/40+
     TUNNELING ......................299/94
  WELDING APPARATUS .................228/24
  WRENCHES ..........................81/463


IMPALING (SEE POINT; PRONG)
  CLOSURE REMOVER COMBINED ..........81/3.47
     IMPALING ONLY EG CORK SCREW ....81/3.48+
  COOKER ELECTRODE ..................99/358
  COOKER SPIT .......................99/419+
  DISPENSER .........................221/213+
  ENDLESS CONVEYOR ..................198/692+
  RAKE ENDLESS CHAIN ................56/400.3
  SUPPORT SPIKED ....................211/125
  SUPPORT STACKED ARTICLE ...........211/54.1+
  TRAPS .............................43/77+

IMPEDANCE (SEE CONDENSER; INDUCTANCE;
 RESISTANCE)
  ALTERNATING CURRENT REGULATORS ....323
  ANTI INDUCTIVE TELEPHONE SYSTEM ...379/416+
  ARC LAMP FRAME WITH ...............314/132
  BRANCHED ..........................333/124+
  COUPLER ...........................333/24.R+
  HIGH FREQUENCY TYPE ...............333
  IN AMPLIFIER COUPLING  SEE
     AMPLIFIER
  INDUCTANCES .......................336
  LOADED SIGNALING CIRCUIT ..........178/45+
  LONG SIGNALING LINES ..............333/236+
  MATCHING ..........................333/32+
  TESTING OF ........................324/691+
     MECHANICAL VIBRATION ...........73/574+
  TRANSFORMERS ......................336
  VARIABLE INDUCTANCE ...............336
  VARIABLE TRANSFORMER ..............336
  WITH ANTENNA ......................343/860+
     PLURAL PATH ....................343/852


IMPELLERS SEE PROPELLERS ............ 416
  COMPRESSOR
     EXPANSIBLE CHAMBER .............418
     JET PUMP COMBINED ..............417/76+
     SCREW ..........................415/71+
  FLUID REACTION SURFACES ...........416
  GAS AND LIQUID CONTACT APPARATUS ..261/84+
  MAKING
     MACHINES .......................29/23.51
     PROCESS ........................29/889+
  PUMP
     CENTRIFUGAL ....................416/179+
     EXPANSIBLE CHAMBER .............418
     SCREW ..........................415/71+
  TEXTILE IMPULSING .................68/134

IMPLANT
  CONTROLLED RELEASE OF MEDICINES ...604/891.1
  DENTAL ............................433/173
  RESERVOIRS ........................604/93
  SECURING CONDUIT TO BODY ..........604/175
  SYNTHETIC RESIN COMPOSITIONS FOR ..523/105+
  SYNTHETIC RESIN USED FOR ..........525/937*

IMPLEMENTS (SEE INSTRUMENT; TOOL)
  COATING OR CLEANING ...............15/104.1+
     MATERIAL SUPPLY COMBINED .......401
  CUTTER ............................30
  EARTHWORKING ......................172
     BULLDOZER ......................172/811+
  EMBROIDERING ......................112/80.3+
  FLATIRON ..........................38/74+
  HANDLING ..........................294
  IGNITING ..........................431/267+
  MAKING ............................76
  PUSHING ...........................254
  SAMPLING ..........................73/864+
  SNOW EXCAVATING ...................37/196+
  SPLICING ..........................57/23


IMPREGNATED
  COATING IMPLEMENT .................15/104.93+
  PRODUCT OF NATURE .................428/15+
  STONE .............................428/540
  TEXTILE ...........................428/224+
  WOOD ..............................428/541

IMPREGNATING
  ABRASIVE TOOLS ....................51/295
  APPARATUS .........................118
  BEER WITH CARBONIC ACID ...........261
  CIGARS AND CIGARETTES .............131/362
  COMPOSITIONS ......................106
  CONDUCTORS INSULATED ..............174/120.R+
     FLUID FOR VACUUM CONTAINING ....174/25.R+
  COVERING APPARATUS COMBINED .......57/7
  COVERING PROCESS COMBINED .........57/7
  MATCH SPLINTS .....................149/3+
  PACKING WITH RUBBER ...............277/227+
  PLANTS LIVING .....................47/57.5
  PROCESSES .........................427
     ION PLATING OR IMPREGNATION ....427/523+
  SPINNING OR TWISTING APPARATUS     57/295
     COMBINED .......................57/295
     PAPER OR CELLULOSE TAPE ........57/32
  TEXTILE PROCESS COMBINED ..........28/167+
     COVERED STRANDS ................57/217
     TWISTED STRANDS ................57/250
  TOBACCO ...........................131/300+
  TWISTING PROCESS COMBINED .........57/295+
  WARP PREPARATION COMBINED .........28/178+

IMPRESSED
  BOOK ..............................462/56
  LEAF ..............................462/67

IMPRESSING
  DENTAL DEVICE .....................433/68+
     MOLD ...........................433/34+
  LEATHER ...........................69/2
  TOBACCO LABELING ..................131/113


IMPROVER
  BREAD OR FLOUR ....................426/653

IMPULSE (SEE ELECTRIC IMPULSE
 GENERATOR)

INCANDESCENT (SEE ELECTRODE;
 ILLUMINATION; LIGHT)
  GASEOUS FUEL BURNERS ..............431/100+
  GRATES FOR GAS BURNERS ............126/92.R
  IGNITERS FOR ENGINES ..............123/145.R+
  INCANDESCENT LAMP .................D26/2+
  LAMPS .............................313/315+
     DESIGN .........................D26
     HEATERS ........................219/552+
     MAKING, GLASS WORKING
       APPARATUS ....................65/152+
       METHODS ......................65/36+
     WITH ARC .......................313/8
  MANTLE ............................431/100+
  MANTLE PACKAGES ...................206/68

INCENDIARY
  AMMUNITION AND EXPLOSIVE DEVICES ..102/364+
     COMPOSITIONS FOR ...............149
  HAZARDOUS OR TOXIC WASTE588
     DESTRUCTION ....................588

INCENSE ............................. 424/40

INCENSE BURNERS
  DESIGN ............................D11/131.1
  DESIGN, SIMULATIVE FORMS ..........D11/131.1
  INCINERATION OF RADIOACTIVE WASTE .976/DIG.393


INCINERATORS ........................ D34/1.1
  COOKING STOVE .....................126/222+
  DRY MATTER ........................110/235+
  GARBAGE ...........................122/2
  HAZARDOUS OR TOXIC WASTE588
     DESTRUCTION ....................588
  WET MATTER ........................110/238

INCLINE (SEE HOISTS)
  ELEVATOR ..........................187/12
     HANDLING TYPE ..................414/595+
     PORTABLE .......................187/10
  GRAVITY WAY .......................193

INCLINOMETER ........................ 33/365+

INCUBATORS .......................... 119/35+
  AUTOMATIC CONTROL .................236/2+
  BABY ..............................60/22
  CONTROLLED HEATING SYSTEMS ........237/3+
  CULTURE PLATES OR CONTAINER .......435/809*
  DESIGN ............................D24/163
  HEATING SYSTEMS ...................237/14+
  SWITCHES ..........................20/61

INDAMINES ........................... 552/301

INDANE .............................. 585/27
  AZO COMPOUND CTG ..................534/659

INDANONES ........................... 568/327

INDANTHRENE ......................... 544/339+


INDAZOLE ............................ 548/361.1+

INDENE POLYMERS ..................... 526/280+
  COUMARONE INDENE RESINS ...........526/266

INDENTING OR INDENTED
  CODE RECORDERS ....................178/92
  LAMINATED FABRIC PROCESS ..........156/196+
  NAILS .............................411/439+
  ROD JOINT .........................403/274+
  SHOE SOLE SEWING MACHINE ..........112/29
  STIPPLING PRESS ...................72/76
  STOCK MATERIAL ....................428/156+
  WIRE SUBSTITUTE FOR NAIL ..........411/439+

INDEX CARD .......................... 40/380

INDEXES
  BOOK CUTTING ......................83/904*
  CALENDAR ..........................283/3
  MAP ...............................283/35
  PRINTED MATTER ....................283/36+
  PROTRUSION TO RECEIVE   40/360
     IDENTIFICATION .................40/360
  TABS ..............................D19/99
  TELEPHONE SELECTOR LIST FINDER ....40/371+

INDEXING (SEE TURRET)
  BRUSH MAKING
     WORK HOLDER ....................30/11
  CHUCK .............................279/5
  DRILLING WORK SUPPORT .............408/71
  GRADUATION SCRIBER ................33/19.1+
  MILLING WORK HOLDER ...............409/221+

INDIA INK ........................... 106/20.R+


INDICATION TRAIN POSITION ........... 246/122.R+


INDICATORS (SEE MEASURING; SIGNAL;
 TESTING)
  ANGLER ............................43/17
  ANNUNCIATORS ......................340/815.1+
  ARM OR POINTER STRUCTURE ..........116/327+
  ARTICLE DISPENSING ................221/2+
  AUTOMOBILE TURN OR STOP
     ELECTRICAL .....................340/458
     MECHANICAL .....................116/35.R+
     SWITCHES .......................20/61.27+
  BOARDS FOR HOUSE SIGNALING SYSTEMS 340/815.23
  BOILER SAFETY .....................122/504.2
  BOTTLE OR JAR CONTENT .............215/365+
     POISON .........................215/367
  BOWLING ...........................473/67+
     FOUL ...........................473/72+
     PINFALL ........................473/69+
  BRAKE ACTUATION ...................116/200+
     ELECTRICAL .....................340/453+
     ELECTRICAL DECELERATION ........340/669
  BRAKE CONDITION ...................188/1.11
  BUILDING INDICIA ..................52/105
  CABINET WITH ......................312/234
  CHANNEL DEPTH .....................116/113
     DEPTH SOUNDING .................33/713+
  CHEMICAL ..........................252/408.1
     HEAT EXCHANGE COMPOSITION
       COMBINED .....................252/68
  CHUCK JAWS COMBINED ...............279/111
  CLOSURE CONDITION .................49/13+
  COATING IMPLEMENT COMBINED ........401/194
  COFFEE MAKERS .....................99/285
  CONTENT ALTERATION ................215/365+
  CONVEYER COMBINED .................198/502.1+
     MEANS TO FACILITATE INSPECTION .198/339.1
  COOKING APPARATUS .................99/342+
  COUNTING ..........................235
  DAMPER POSITION ...................126/295
  DIRECTION .........................33/300+
  DRYING APPARATUS COMBINED .........34/89
  EARTH BORING COMBINED .............175/40+
  ELECTRICAL
     ANNUNCIATORS ...................340/815.1+
     CABLE COMBINED .................174/11.R
     CURRENT DIRECTION ..............324/133
     FUSE ...........................337/241+
     GROUND .........................340/649
     LINE-SIGNAL INDICATOR TESTING ..379/20
     PHASE ..........................324/76.77+
     POLARITY .......................324/133
     SWITCH OPERATING ...............20/56.R
     SWITCH POSITION ................20/308+
     TELEPHONE CALL .................379/27+
     VEHICLE SYSTEMS ................340/425.5+
  EXPANSIBLE CHAMBER MOTOR COMBINED .91/1
  FIRE ESCAPE COMBINED ..............182/18
  FISHERMAN .........................43/17
  FLUID HANDLING SYSTEM OR DEVICES
     WITH ...........................137/551+
  FLUORESCENT AND PHOSPHORESCENT ....250/483.1
  FOUNTAIN PEN COMBINED .............401/194
  FUNNEL COMBINED ...................141/95
  FUSE ..............................337/265
  HEADLIGHT COMBINED ................362/61+
  HEAT EXCHANGER COMBINED ...........165/11.1
  ILLUMINATION COMBINED SOURCE ......362/253
  LEAKAGE ...........................137/312+
  LIQUID HEATER .....................126/388
  LOCK
     COMBINATION ....................70/330+
     CONDITION ......................70/432+
  MACHINE TOOL
     CUTTING MACHINE ................83/522.11+
     SELECTIVE PUNCHING .............234/131
  MAIL BOX COMBINED .................232/37
  MEASURING COMBINED ................73
     SPACIAL RELATIONS ..............33
  MECHANICAL ........................116
  METAL CASTING COMBINED ............164/150+
  METAL DEFORMING APPARATUS COMBINED 72/31+
  MICROMETER ........................33/818+
  MOUNTINGS .........................248/904*
  MUSIC
     INSTRUMENTS AUTOMATIC ..........84/169
     TEACHING .......................84/477.R+
  NAUTICAL ..........................116/26+
     BUOY ...........................441/1+
     LIFE PRESERVER COMBINED ........441/89
     NUCLEAR FUEL RUPTURE WARNING ...376/251
     NUCLEAR FUEL RUPTURE WARNING ...376/450
     WATER LEVEL IN BOAT ............116/227+
  NUCLEAR REACTOR CONDITION .........376/245
  PHOTOGRAPHIC FILM HOLDERS .........354/276+
  PIPES .............................138/104
     WEAR ...........................138/36
  PNEUMATIC DISPATCH ................406/34+
  POISON ............................215/367
  REFRIGERATION .....................62/125+
  RESONANCE .........................334/30+
  SAFES .............................109/38+
     FLUID RELEASING COMBINED .......109/31
  SEPARATOR, IMPERFORATE BOWL        494/10
     CENTRIFUGAL ....................494/10
  SPEAKING TUBE COMBINED ............181/19
  STEAM ENGINE ......................346/3+
  STEERING TOWED SHIP ...............114/246
  STRAND TENSION ....................242/148
  TAGS STOCK TALLEY .................283/79
  TAILLIGHT COMBINED ................362/61+
  TARGET COMBINED ELECTRICAL ........273/371+
  TARGET COMBINED MECHANICAL ........273/378+
  TELEMETRIC ........................340/870.4+
  TESTER WITH .......................73
  THERMOSTAT COMBINED ...............236/94
  TIME ..............................368/223+
  TRAIN CARRIED STATION INDICATOR ...246/174+
  TRAIN DEFECT ......................246/169.R
     HOT BOX ........................116/214
  TUNER .............................334/86+
  TUNING RADIO ......................455/154.1
  TYPE JUSTIFYING ...................276/11
  TYPEWRITER ........................40/703+
     LINE SPACING COMBINED ..........40/548+
  VALVE .............................137/551+
  WINDING
     SPRING MOTOR ...................185/44
     SPRING MOTOR PLURAL ............185/14
     WATCH ..........................368/210
     WEIGHT MOTOR ...................185/36
  WRECK BUOYS .......................441/6+

INDICIA (SEE INDICATORS)
  MILEAGE TRANSPORTATION ............283/24

INDIGO .............................. 548/457+

INDIGOID
  AZO COMPOUNDS .....................534/789
  DYE COMPOSITIONS CONTAINING .......8/653

INDIUM, METAL WORKING WITH .......... 29/DIG.22
  PYROMETALLURGY ....................75/688

INDOANILINES ........................ 552/302

INDOLINES ........................... 548/490

INDOPHENOLS ......................... 552/302
  CARBAZOLE .........................548/442


INDUCTANCE .......................... 336
  CAPACITOR WITH ....................361/270+
  LAMP OR ELECTRONIC TUBE SYSTEM     315/289
     HAVING .........................315/289+
  RESISTOR WITH REDUCED .............338/61+
  RESONATOR HAVING ONLY .............333/219+
  SYSTEMS ...........................323/355
  TRANSFORMER HAVING      336/69
     MODIFYING MEANS FOR ............336/69
  TRANSMISSION
     LINE COMPONENTS WITH ...........333/245+
     LINE WITH ......................333/236+
  TUNER HAVING LUMPED IMPEDANCE .....334/71+
  VARIABLE ..........................336


INDUCTION (SEE ANTI-INDUCTION)
  CAB SIGNAL ........................246/194
     SIGNAL BLOCK ...................246/63.R
  COIL
     CHECK OPERATED .................194/239+
     COMMUNICATION CIRCUIT LOADING ..178/45+
     ELECTRIC APPARATUS .............336
     TELEPHONE ......................379/172+
  CURRENT TRANSMISSION TO VEHICLES ..191/10
  DISTURBANCES IN ELECTRIC174/32
     CONDUCTORS AND CABLES REDUCING .174/32+
     TELEGRAPH ......................178/69.R
  DRIVE FOR ELECTRIC RAILWAYS .......104/288+
  ELECTROSTATIC GENERATOR ...........310/309+
  ELECTROTHERMIC PROCESSES,          75/10.1+
     METALLURGY .....................75/10.1+
  FOR ELECTROTHERAPY ................607/115+
  FURNACE ...........................373/138+
  FURNACE WITH ARC ..................373/4
  FURNACE WITH RESISTANCE ...........373/6
  GENERATORS ........................310/168+
  HEATERS ...........................219/10.75
     LAMINATING APPARATUS ...........156/379.6+
     LAMINATING METHODS USING .......156/272.2+
  HEATING
     APPARATUS ......................219/6.5+
     COOKING ........................219/10.493
     METAL CASTING DEVICE COMBINED ..164/250.1
       CONTINUOUS CASTING APPARATUS .164/507
     METHODS ........................219/10.41+
  IGNITING DEVICE ...................361/247+
  INDUCTOR DEVICE ...................336
  MOTOR .............................310/166+
     SYSTEM .........................318/727+
  REACTOR VARIABLE ..................336
  REGULATOR .........................336
  TELEGRAPH SYSTEM ..................178/43
  TELEPHONE SYSTEM ..................379/55
  TRAIN DISPATCHING .................246/8
  TRANSFORMER STRUCTURE .............336
  TRANSFORMER SYSTEM FOR METAL
     HEATING ........................219/116

INDUCTION MOTOR ..................... 310/166+

INDUCTOR SEE INDUCTANCE


INDULINE ............................ 544/348

INDURATING
  CATALYSTS .........................502/100+
  COMPOSITIONS ......................106/12
  METAL CASTING USING ...............164/66.1+
     CONTINUOUS CASTING .............164/475

INERT GASES
  SEPARATING ........................95

INERTIA CONTROLLED
  AIRCRAFT CONTROL GRAVITY ..........244/80
  AIRCRAFT CONTROL GYROSCOPIC .......244/79
  BRAKE .............................188/266
  BRAKE .............................188/275
  CENTRIFUGAL ELECTRIC SWITCH .......20/80.R
  CLOSURE CHECKS ....................16/83
  COMPASSES GYROSCOPIC ..............33/324+
  DERAILMENT TRIP ...................246/173
  DISPENSER OUTLET ELEMENT ..........222/500
  DROP BOMB CONTROL .................102/382+
  FLY WHEELS ........................74/572+
  FUSES .............................102/247+
  HYDRAULIC BRAKE ...................303/24.1
  MONORAIL CARS .....................105/141
  OPERATED SWITCHES .................20/61.45R
  PENDULUM OPERATED EXHIBITOR .......40/485
  PLANETARY GEARING .................475/267+
  SPEED RESPONSIVE DEVICES ..........73/514+
  TORPEDO STEERING ..................114/24
  TOY VEHICLE DRIVE .................446/462+
  VALVE ACTUATORS ...................137/38+
  VIBRATING EXHIBITOR ...............40/613+
  VIBRATION DAMPING .................188/378+
  VIBRATION SENSING .................73/652+

INEXACT KNOWLEDGE ................... 395/61

INFANT CRAWLING, TEACHING ........... 434/255