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:


MACARONI ............................ 426/557
  APPARATUS
     DIE EXPRESSING .................425/288
     DIE EXPRESSING .................425/289+
     DIE EXPRESSING .................425/331
     DIE EXPRESSING .................425/381.2
  DESIGN ............................D01/126+
  DRYING DIGEST .....................34

MACHETE ............................. 30
  DESIGN ............................D22/118

MACHINE ELEMENTS .................... 74
  AUTOMATIC OPERATION OR CONTROL ....74/2+
  BEARINGS ..........................384
     DESIGN .........................D15/143
  BELT & PULLEY DRIVE SYSTEM ........474
  BRAKES ............................188
     FLUID PRESSURE BRAKE & ANALOGOUS
       SYSTEMS ......................303
  CLUTCHES & POWER-STOP CONTROL .....192
  CONTROL LEVER & LINKAGE SYSTEMS ...74/469+
  CYLINDERS AND PISTONS .............92
  DESIGN,GENERAL ....................D15
  ENGINE STARTERS ...................74/6+
  GEARING ...........................74/640+
     PLANETARY ......................475
  GYROSCOPES ........................74/5.R+
  INTERMITTENT GRIP TYPE MOVEMENTS ..74/111+
  LIGHTING ..........................362/89+
  MECHANICAL MOVEMENTS ..............74/20+
  POWER TAKE-OFF ....................74/11+
  PUSHING & PULLING IMPLEMENTS,FORCE 254/1+
     MULTIPLIERS ....................254/1+
  ROTARY MEMBER OR SHAFT INDEXING ...74/813.R+
  SHAFT OPERATORS ...................74/10.R+
  SHAFTING AND FLEXIBLE SHAFT        464
     COUPLINGS ......................464
     LOST MOTION COUPLINGS ..........464/160+
     ROTARY SHAFTING ................464/179+
  TOOL DRIVING OR IMPACTING .........173
  WORK HOLDERS ......................269


MACHINE GUN ......................... 89/9+
  EXPLOSIVE PROPELLANT TYPE .........89/9+
     CHARGER ........................89/1.4
     SELF LOADING EXPLOSION OPERATED 89/125+
  MECHANICAL ........................124
     CENTRIFUGAL ....................124/4+

MACHINE SUPPORTS .................... 248/637+

MACHINERY,TOY ....................... 446

MACKINAWS ........................... 2/93+

MACRAME ............................. 289/16.5


MAGAZINE (SEE HANDLE RECEPTACLE TYPE)
  AMMUNITION AND EXPLOSIVE
     BODY OR BELT ATTACHED ..........224/223+
       BANDOLEER ....................224/203
       COVERED FLAP .................224/239
     CHARGERS .......................42/87+
     GUN COMBINED ...................42/2+
     LOADING ........................86/47
     MECHANICAL GUN OR PROJECTOR ....124/45+
     ORDNANCE .......................89/33.1+
     RAILWAY TORPEDO ................246/212+
     REVOLVER COMBINED ..............42/60
     STRUCTURE ......................42/49.1+
  ARTICLE DISPENSER SEE CLASS DEFS ..221
  BOILER
     LIQUID HEATER OR VAPORIZER .....122
  CAMERA ............................354/174+
  COIN RETURN, EMPTY DISPENSING .....194/200
  DRY CLOSETS .......................4/464+
  ELECTRODE .........................314/5
  FIRE POTS COMBINED WITH MAGAZINE   D23/386+
     SECTION ........................D23/386+
  HOLDER AS FURNITURE ...............D06/396+
  HOLDING NUCLEAR FUEL ELEMENT ......976/DIG.247+

  IMPLEMENTS AND MACHINES WITH
     ASSEMBLING APPARATUS ...........29/809+
     CHECK CONTROLLED MACHINE .......194
     DETONATING CANE ................446/403
     LABEL PASTING MACHINE ..........156
       DIGEST, APPARATUS ............156/DIG.29
     NAIL DRIVERS ...................227
     PENCIL .........................401/89+
     PENCIL SELECTIVELY   401/56
       REPLENISHING FEED GUIDE ......401/56
     PENCIL SEQUENTIALLY  401/57
       REPLENISHING FEED GUIDE ......401/57
     RAZOR ..........................30/40
     RIVETER ........................227
     RIVETER EYELET .................227/51+
     SOUND RECORDING TAPES ..........D14/120+
     STAPLING .......................227
     TYPE CASES .....................276/44+
     TYPE CASTING MACHINE ...........199/1+
     TYPE SETTER ....................276/15
     TYPE SETTER AND DISTRIBUTOR ....276/3+
     TYPEWRITER PAPER FEED ..........40/624+
     WIRE AND SLAT ..................140/27
     WIRE AND SLAT PORTABLE .........140/38
     WIREWORKING ....................140/53+
  LABELING ..........................156/DIG.29
  LOCK MAGAZINE CYLINDER & PIN       70/DIG.5
     TUMBLERS .......................70/DIG.5
  MOTION PICTURE FILM ...............352/78.R
  PAPER COVER REMOVAL ...............83/933*
  PHOTOGRAPHIC ......................354/174+
     SLIDE PROJECTOR, DESIGN ........D16/236
  RAZOR BLADE HOLDER ................206/352+
     WITH MEANS OF FEEDING BLADES    30/40
       INTO RAZOR ...................30/40
  STOVE AND FURNACE
     FURNACE STRUCTURE ..............110/293+
     STOVE ..........................126
  TOASTER ...........................99/387
  WITH ARTICLE REMOVING FACILITIES ..312/35

MAGENTA SEE FUCHSINE

MAGIC
  AMUSEMENT DEVICES .................472/57+
  CLOCK .............................368/81
     SLIDES .........................40/152+

MAGNESIA ............................ 423/635
  CEMENT ............................106/801

MAGNESIUM
  ALLOYS ............................420/402
     ALUMINUM .......................420/542
     ALUMINUM COPPER ................420/533
     ELECTROLYTIC SYNTHESIS .........204/70
  COMPOUND INORGANIC ................423
     CARBONATES .....................423/430+
     INORGANIC ......................423
     OXIDE AND HYDROXIDE ............423/635
  ELECTROTHERMIC PROCESSES ..........75/10.1+
     VOLATILIZATION OF MAGNESIUM ....75/10.33
  HEAT TREATMENT ....................148/666+
  METAL WORKING WITH ................29/DIG.27
  OXYCHLORIDE CEMENT ................106/685+
  PEROXIDE ..........................423/583
  PLATE .............................428/649+
  PREPARATION
     ELECTROLYTIC ...................204/70
     PYROMETALLURGY .................75/594+
  STRIP TYPE SOLID FUEL .............431/99


MAGNET AND MAGNETIC SEE TYPE OF
 MAGNET .............................D13/183
  ACTUATED MOTOR FOR RAILWAY
     SWITCHES .......................246/227+
  ACTUATED MOTOR FOR RAILWAY
     SWITCHES .......................246/231+
  ACTUATED SWITCH ...................335/2+
  ALLOYS ............................420
  ANALOG STORAGE SYSTEMS ............365/48
  ANTIMAGNETIC DEVICES FOR
     WATCHES AND CLOCKS .............368/293
  ARC OR RAY DEFLECTING OR FOCUSING
     ARC LAMP .......................313/153+
     ARC LAMP WITH DISCHARGE
       DEFLECTING ...................314/20
     CATHODE RAY TUBE ...............313/421+
     CATHODE RAY TUBE CIRCUITS WITH
       PLURAL .......................315/14+
     ELECTRON MICROSCOPE ............250/311
     ELECTRONIC TUBE CONTROLLED BY ..315/267
     ELECTRONIC TUBE CONTROLLED BY ..315/344+
     X RAY TUBE .....................378/137
  BOARD GAMES .......................273/239
  BRACKET ...........................248/206.5
     HOLDING ARTICLE BY .............248/309.4
  BUBBLES, MAGNETIC .................365/1+
  CHARGERS ..........................335/284
  CHUCK .............................279/128
     HOLDING MAGNET .................335/285+
  CIRCUIT AND SWITCH CONTROL
     ARC BLOWOUT ....................315/344
     ARC BLOWOUT IN SWITCH ..........20/147.R
     ELECTROMAGNET CIRCUITS .........361/139+
     ELECTROMAGNETIC SWITCH .........335/2+
     ELECTROMAGNETIC SWITCHING ......361/139+
     OPERATOR FOR BRAKE .............188/161+
     RAILWAY CAB SIGNAL .............246/178+
     RAILWAY CAB SIGNAL .............246/193+
     RAILWAY CAB SIGNAL .............246/197
     RAILWAY CAB SIGNAL .............246/202
     RAILWAY POINT THROWER ..........246/265
     RAILWAY SWITCH ACTUATION .......246/225+
     RAILWAY TRAIN TRIP .............246/360
     TRANSMISSION TO VEHICLES .......191/16
     TRANSMISSION TO VEHICLES .......191/17+
  CIRCUIT CONTROLLER FOR RAILWAY
     SECTION ........................191/17+
     ARC LAMP OPERATOR ..............314/104
  CLOSURES ..........................220/230
  CLUTCHES ..........................310/92+
  COMPASSES .........................33/355.R+
  COMPOSITIONS ......................252/62.51
  CONSUMABLE ELECTRODE FEED OR
     CONTROL ........................314
  CONTROL FOR FRICTIONAL GEARING ....476/11
  CONVEYERS AND FEEDERS
     HOLDING ITEM BY MAGNETIC
       ATTRACTION ...................209/904*
     MAGNETIC FEEDER ................209/907*
  COOLING BY ........................62/3.1
  COUPLING ..........................464/29
  DEMODULATOR FOR RADIO RECEIVER ....329
  DIGITAL SIGNAL PROCESSING .........360/39+
  DISK ..............................360/135
  DRUM ..............................360/136
     TRANSPORT SYSTEMS ..............360/81+
  DYNAMIC MAGNETIC INFO STORAGE
     AND RETRIEVAL ..................360
     AUTOMATIC CONTROL SYSTEM .......360/69+
     GENERAL RECORDING OR REPRODUCING360/55+
     HEAD ...........................360/110+
     PHYSICAL ELEMENTS ..............360/102+
     RECORD MEDIUM ..................360/131+
     SIGNAL PROCESSING ..............360/18+
     SPECIAL PURPOSE DEVICES ........360/1+
  EARTH BORING TOOL .................175/328
  ELECTRO ...........................335/209
     LIFTING ........................335/291
     REMOVING SPLINTERS FROM THE EYE 60/11
  ELECTROCHEMISTRY APPARATUS ........422/186.1+
  EXPLOSIVE IGNITERS
     FUSES ..........................102/206+
     MARINE MINES ...................102/417
  FEELER MECHANISM LOOM .............139/274
  FENDER SECURING DEVICE ............293/DIG.6
  FISHING REEL BRAKE ................242/286
  FLIP FLOPS ........................307/406
  HAZARDOUS WASTE DESTRUCTION .......588
  HOIST LINE TYPE ...................294/65.5
  INDUCTION CURRENT TRANSMISSION TO
     VEHICLES .......................191/10
  INSTRUMENTS .......................33/DIG.1
  JOINTS AND CONNECTIONS DIGEST .....403/DIG.1
  KEY LOCK ..........................70/413
  LEVITATION RAILWAY ................104/281+
  LIFTING HANDLING OR HOLDING .......335/285
     BRACKET SUPPORTS ...............248/206.5
     CONVEYORS ......................198/690.1
       ENHANCED BY MAGNETIC HOLD ....198/690.1+
     DETACHABLE ELECTRIC CONNECTOR ..439/38+
     GRAPPLES .......................294/88
     HAND AND HOIST LINE IMPLEMENTS .294/65.5
     LIGHT SUPPORTS .................362/398
     MATERIAL HANDLING ..............414/606
     METAL FOUNDING APPARATUS .......164/146
     RAILWAY MAIL DELIVERY258/4
       APPARATUS ....................258/4
  LIGHTNING ARRESTER ................361/133+
  LOCOMOTIVE TRACTION REGULATOR .....105/77+
  LOOM SHUTTLE ACTUATOR .............139/134
  MAGNETIC BUBBLES ..................365/1
  MAGNETIC MEMORY ...................365
     ASSOCIATIVE MEMORIES ...........365/50
     DYNAMIC INFORMATION STORAGE & ..360
     FORMATION BY SHAPING ...........264/104
     LAMINATED TYPE .................428/900*
     MAGNETIC BUBBLES ...............365/1+
     READ-ONLY MEMORIES .............365/97+
     STATIC INFORMATION STORAGE &    365
       RETRIEVAL ....................365
     WITH COATED METAL BASE .........437
  MAGNETIC RECORDING DIGEST .........29/DIG.28
  MAKING ............................29/603+
  MATERIAL TREATMENT ................148/100+
     IN MAGNETIC FIELD ..............148/108
     METAL CASTING WITH .............164/498+
       CONTINUOUS CASTING METAL WITH 164/466+
     NONMETALLIC ....................252/62.51
     PARTICULATE MATERIAL ...........148/105
     PERMANENT ......................148/101+
     PERMANENT IN MAGNETIC FIELD ....148/103
     PERMANENT WITH AGE HARDENING ...148/102
     SILICON STEEL ..................148/110+
  METAL WORKING DIGEST ..............29/DIG.95
  MICROPHONE ........................381/177+
  MINES .............................102/401+
  MOTOR ART DIGEST ..................91/DIG.4
  MOTOR OPERATED LOCK ...............70/276
  MOTORS WITH ARMATURES .............335/220
  MOTORS WITH ARMATURES .............310/10+
  MUSIC LEAF TURNER .................84/521
  MUSIC TONE GENERATOR ..............84/641+
  PACKAGE OR RECEPTACLE .............206/818*
  PERMANENT AND ELECTROMAGNET        335/209+
     STRUCTURE ......................335/209+
     MAKING .........................29/607+
  PRESS DIGEST ......................10/917*
  PULSE GENERATOR ...................307/419
  READ ONLY MEMORIES ................365/97+
  RECORD AND RECORDING ..............360/1+
     COATING ........................427/128+
     COPYING ........................360/15+
     EDITING ........................360/13+
     GENERAL REPRODUCING ............360/55+
     MEDIUM .........................360/131+
     MONITORING .....................360/31
     TRANSPORT SYSTEMS ..............360/81+
  RELUCTANCE
     ADJUSTABLE DYNAMO STRUCTURE ....310/191
     GENERATOR CONTROL ..............322/49+
  SEAL ..............................277/80
  SEPARATION (SEE SEPARATOR)
     AUTO CRANKCASE DRAIN PLUG ......335/305
     DIAMAGNETIC ....................209/212
     GAS APPARATUS ..................96/1+
     GAS PROCESSES ..................95/28
     IRON PARTICLES FROM SOLIDS .....209/213+
     LIQUID .........................210/222+
     PARAMAGNETIC ...................209/213+
     SORTING BY .....................209/636
       EDGE CODING ..................209/609
  SOUND RECORDING AND REPRODUCING
     GENERAL RECORDING OR REPRODUCING360/55+
     PHONOGRAPH .....................360/86
     PHONOGRAPH RECORD ..............360/135
  STATIC INFORMATION STORAGE &       365
     RETRIEVAL ......................365
     ASSOCIATIVE MEMORIES ...........365/49+
     MAGNETIC BUBBLE MEMORIES .......365/1+
     READ-ONLY MEMORIES .............365/94+
  STOCK .............................148/300+
     COMPOSITE ......................428/928*
  STRUCTURE .........................335/209+
  TAPE FOR RECORDING ................360/134
     CASSETTE .......................D14/121
     REEL ...........................D14/122
  TEACHING MAGNETISM ................434/301
  TELEVISION SIGNAL RECORDING .......360/33.1+
  TESTER ............................324/205+
     COIN FRAUD PREVENTING ..........194/320+
  THERAPEUTIC MAGNETIC VIBRATOR .....607/2+
  THERAPEUTIC OR PROBE TYPE .........60/9+
  THERMONUCLEAR REACTIONS USE IN ....376/121
     MIRROR .........................376/140
  THIN FILM MEMORIES ................365/171+
  TOOL HOLDER-FLEXIBLE
     ABRASIVE .......................51/362
  TOXIC WASTE DESTRUCTION ...........588
  TOYS ..............................446/129+
  TRIGGER DEVICES ...................307/414
  VERTICALLY SWINGING MATERIAL       414/737
     HANDLING .......................414/737
  WINDING (SEE MAKING) ..............242/7.7+
     METHOD .........................242/7.3
  WIRE RECORDERS ....................360/89
  WORK HOLDERS ......................269/8

MAGNETIC RESONANCE IMAGING OR
 SPECTROSCOPY
  ANALYTICAL OR IMMUNOLOGICAL        436/173
     TESTING ........................436/173
  DIAGNOSTIC, ON OR IN LIVING BODY ..128/653.2+
  NUCLEAR RESONANCE SPECTROMETER     324/307+
     SYSTEM .........................324/307+

MAGNETIZING
  CIRCUIT OR APPARATUS FOR ..........361/143+
  MAGNETS OR ELECTROMAGNETS FOR .....335/284


MAGNETOELECTRIC GENERATORS .......... 310/69+
  PERMANENT MAGNET TYPE .............310/152+
  WITH IGNITION SYSTEM ..............123/143.R+

MAGNETOMETERS ....................... 324/244

MAGNETOSTRICTIVE
  ELECTROACOUSTIC TRANSDUCERS .......73/570+
     MICROPHONE .....................381/168+
     SEISMOGRAPH TYPE ...............367/140
     TELEPHONE RECEIVER .............381/190
     UNDERWATER TYPE ................367/168
       PLURAL TRANSDUCER ARRAY ......367/156
     VIBRATION TESTING ..............73/570
  MAGNETS AND ELECTROMAGNETS ........335/215

MAGNETRON
  AMPLIFIER .........................330/47+
  DEMODULAR .........................329
  MODULATOR .........................332
  OSCILLATORS .......................331/157
  RADIO TRANSMITTER WITH ............455/91+
  STRUCTURE OF TUBE .................315/39
  SUPERSONIC WAVE GENERATOR
     OSCILLATOR .....................331/154
  SYSTEM IN TUBE ....................315/32
  SYSTEM MISCELLANEOUS ..............328/230
  TUBE STRUCTURE ....................315/39.51
  ULTRASONIC WAVE GENERATOR AGITATOR 366/108+
  WITH PULSING SYSTEM ...............375

MAGNIFYING SEE TELESCOPES MICROSCOPES
  GLASSES ...........................359/811+
     DESIGN .........................D16/135
     WITH MOUNT .....................359/819+
  LENSES ............................359/656+
     WEIGHING SCALE .................359/440+
  LIQUID DEPTH GAUGES ...............73/327
  POCKET ............................359/817
  THERMOMETER TUBE ..................374/193


MAIL
  CONTAINERS
     BAGS ...........................383
     BOTTLE CASES ...................217/127
     COIN CARDS .....................229/92.9
     ENVELOPES ......................229/68.R+
     LETTER BOX CLOSURES OR CHUTES ..232/45+
     LETTER BOXES ...................232/17+
     MAILBOX DESIGN .................D99/29+
     MAILING WRAPPERS ...............229/92
     TUBES ..........................229/93
  DELIVERY RAILWAY ..................258
  HANDLING
     AIRCRAFT .......................258/1.2+
     CABLE CAR ......................104/177
     CABLE CAR SINGLE CABLE .........104/181
     CANCELER AND CONTAINER COMBINED 101/71
     CANCELLING STAMPS ..............101/371
     CHUTES .........................193/8
     ELEVATOR .......................187/4
     MAIL ONTO & OFF VEHICLE ........414/265
     RAILWAY ........................258
     SORTING ........................209/900*
     SORTING FLAT-TYPE MAIL .........209/900*
  LETTER SHEETS .....................229/92.1+
     WITH RETURN CARD ...............229/92.8
  POSTAL CARDS ......................229/92.8
  RAILWAY DELIVERY ..................258
     AIRCRAFT IN FLIGHT .............258/1.2+
     SIGNALING FEATURE ..............258/2
  STAMPING MACHINES
     POSTING ........................156
     PRINTING .......................101/95

MAINS AND PIPES ..................... 138
  TAPPING ...........................137/317+

MAINSPRING
  APPLIERS AND REMOVERS .............29/228
  FASTENINGS ........................368/144
  WINDER, WATCHMAKERS ...............81/7.5

MAKE-READY .......................... 101/401.3


MAKE-UP
  BOX ...............................132/286+
  BRUSH .............................D04
  CAPE ..............................D28/99

MALACHITE GREEN ..................... 552/113+

MALATHION ........................... 558/180
  COMPOSITIONS BIO AFFECTING ........514/122+

MALEIC ACID ......................... 562/595
  ANHYDRIDE .........................549/262
     CARBOCYCLIC COMPOUND ...........549/234+

MALEINIDES .......................... 548/548+

MALLEABLEIZING CAST IRON ............ 148/616+

MALLET .............................. 81/19
  AMUSEMENT DEVICE ..................273/67.R+
  DESIGN ............................D08/77

MALONIC ACID ........................ 562/590

MALONONITRILE ....................... 558/453


MALT AND MALTING .................... 435/185
  BEVERAGES .........................426/16+
     UNFERMENTED ....................426/590+
  DIASTATIC MASHING .................435/93+
  EXTRACTS ..........................426/44
  MILK ..............................426/580+

MANACLES ............................ 70/16+

MANDELIC ACID ....................... 562/470

MANDOLIN ............................ 84/268
  TAILPIECES ........................84/301


MANDREL SEE CORE
  CIRCULAR SAW ARBOR ................144/155
     SAW SHARPENING .................76/79
     WOOD SAW .......................144/155
  DENTAL TOOL .......................433/134+
  EXPANDING .........................279/2.1+
     WINDING & REELING SEE NOTES TO .242/72.R
  GLASS RESHAPING NECK FORMING ......65/286+
  HAIR CURLER .......................132/226+
  METALWORKING
     BILLET PIERCING ................72/358
     CHUCK ..........................279
     COILING ON TRAVELLING ..........72/142
     CONICAL SPRING FORMING .........72/139
     DRAWING METAL TUBES ON .........72/283
     EXTRUDING PLASTIC METAL BY      72/253.1+
       PLUNGER AND ..................72/253.1+
       INDIRECTLY ...................72/273.5
     FOR TUBE ROLLING ...............72/113
     FORGING AND WELDING ............72/481
     NUT AND WASHER FORGING .........470/26
     NUT FACING ARBOR ...............408/22
     PLASTIC METALWORKING ...........72/476+
     SOLDERING CLAMP ................269
     TUBE PRESSURE WELDING ..........228/3.1
     TUBE ROLLING WITH ..............72/208+
     TUBE THREADING .................408/104+
     TURNING WORK DRIVER ............82/168+
     WELDING DRAWING DIE ............228/16
     WELDING TUBES BY DRAWING ON ....228/17.5+
     WIRE ARTICLE FORMS .............140/92.1+
  PAPER BAG MAKING ..................493/250+
  PAPER BAG MAKING ..................493/175+
  PAPER TUBE MAKING .................493/269+
  SHEET AND BAR CUTTING .............83/924*
  SOUND RECORD CYLINDER .............369/260
  TEXTILE BRAIDING APPARATUS ........87/34
  TEXTILE SPINNING APPARATUS ........57/138
  WOOD TURNING HOLLOW ...............142/54

MANGANESE
  COPPER ALLOYS .....................434
  GLYCEROPHOSPHATE ..................556/24
  HEAT TREATING STEEL CONTAINING ....148/619+
  MANGANATES ........................423/592
  OXIDE AND HYDROXIDE ...............423/606
  PLATE .............................428/660
  PYROMETALLURGY ....................75/624+
     ALLOYS .........................420/434
  THIO CARBAMATES ...................556/38+


MANGLE
  MACHINE ELEMENT ...................74/71+
     OSCILLATING RACK ...............74/80
  TEXTILE IRONING ...................38/44+

MANHOLE, MASONRY .................... 52/19+
  COVER .............................404/25+
  ELECTRICAL DISTRIBUTION ...........174/37+
  VENTILATOR ........................454/48

MANICURING DEVICES .................. 132/73+
  CUTLERY ...........................30/26+
  MANICURE IMPLEMENTS ...............D28/56+

MANIFOLD MAKING ..................... 29/890.8

MANIFOLDING ......................... 462
  MARK FORMING COOPERATING LEAVES ...503/200+
  STYLUS ............................81/9.2
  TYPEWRITER ........................40/497+

MANIKIN
  ANATOMICAL STUDY ..................434/267+
  APPAREL DISPLAY ...................223/66+
  DOLL ..............................446/268+
  TAXIDERMIC STUDY ..................434/296+


MANIPULATORS
  BUGGY WHIP ........................280/178
  CLOTHES WRINGER PRESSURE ..........68/256+
  CONTROL, ELECTRIC .................395/80+
  CONTROL, ELECTRIC MOTORS ..........318/568.11+
  ELECTRIC FURNACE ..................373
     ARC ............................373/85+
     INDUCTIOM ......................373/138+
     RESISTANCE .....................373/116
  KINESITHERAPY .....................128/61
  LIGHT GLOBES ......................81/53.11+
  METAL FOIL MAKING .................29/17.4+
  METAL PARTS ASSEMBLING ............29/270+
  NUCLEAR REACTOR ...................976/DIG.272
  ORIENTATION COMPUTATIONS ..........395/97
  PROGRAMMABLE ......................318/568.11
  PROGRAMMED ........................395/80+
  ROBOT
     ELECTRIC CONTROL ...............395/80+
     ELECTRIC MOTORS ................318/568.11+
  TARGETS ...........................273/406
  TELEGRAPHIC SWITCHBOARD ...........178/75
  THREAD AND FABRIC
     FLUID TREATMENT ................8/147+
     FORMING WARP INTO CHAINS .......28/175+
     HEDDLE HOLDER ..................28/205+
     SEWING .........................112/122+
     TEXTILE WEAVING ................139
  TYPE MATRIX .......................199/4+
  WHEEL RIM .........................301/33+
  WORK HEATED .......................432/122+

MANOMETER ........................... 73/747+
  CHEMICAL ANALYSIS, APPARATUS ......422/82.13

MANSARD ROOF ........................ D25/25

MANTELS ............................. 52/36.3
  DESIGN ............................D23/404


MANTLES
  INCANDESCENT ......................431/100
     COMPOSITIONS ...................252/492
     MAKING .........................431/100
     MAKING BY COATING ..............427/159
     PACKAGES .......................206/68
     SUPPORT ........................431/100+

MANUFACTURING & ASSEMBLING
  ARTIFICIAL INTELLIGENCE DATA
     PROCESSING SEE ARTIFICIAL
     INTELLIGENCE
  BOOKS, MAKING .....................412/1
  BRUSH, BROOM, & MOP MAKING ........30
  BUTTON MAKING .....................79
  CHAIN, STAPLE, & HORSESHOE MAKING .59
  COOPERING .........................147
  ELECTRIC LAMP & DISCHARGE DEVICES, 445
     MANUFACTURING & REPAIR .........445
  ELONGATED-MEMBER DRIVING APPARATUS 227
  METAL FOUNDING ....................164
  METAL TOOLS & IMPLEMENTS, MAKING ..76
  METAL WORKING .....................29
     ASSEMBLING APPARATUS ...........29/700+
     METHODS ........................29/400.1+
  NEEDLE & PIN MAKING ...............163
  PACKAGE MAKING ....................53
  PAPER ARTICLE MAKING ..............493
  SHEET MATERIAL ASSOCIATING OR
     FOLDING ........................270
  TOBACCO ...........................131
  WHEELWRIGHT MACHINES ..............157

MANURE .............................. 71/21
  FORKS .............................294/55.5+
  LOADERS ...........................414/680+
  POUCHES ...........................119/95


MAP
  EDUCATIONAL .......................434/130+
     ASTRONOMICAL ...................434/284+
     RELIEF .........................434/152
  HOLDER FOR MAP OR CHART ...........40/904*
  ILLUMINATED ROUTE .................340/286.14
  JIGSAW ............................273/157.R
  ROAD ..............................40
  STRUCTURE .........................283/34+
  TERRESTRIAL MAP DESIGN ............D19/61

MAPPING RADIOACTIVE AREA ............ 250/336.1
  SCINTILLATION TYPE ................250

MARASCHINO CHERRIES ................. 426/639

MARBLE AND MARBLING SEE MARBLEIZING
  COATING MACHINES ..................118/402+
  IMITATING PROCESSES ...............264/73+
  PLAYING MARBLE MACHINES ...........425/332+
  RUNWAYS ...........................446/168+
  WORKING ...........................125
     ABRADING .......................51

MARBLEIZING ......................... 427/256+
  COATING PROCESSES .................427/256+
  DYEING EFFECT COLORING ............8/478+

MARGARINE ........................... 426/603+
  APPARATUS .........................99/452+
  DESIGN ............................D01
  PRESERVATION ......................426/330.6

MARGIN
  REGULATOR TYPEWRITER ..............40/342+


MARIMBA ............................. 84/403
  DESIGN ............................D17/23

MARINE
  ANIMAL BUTCHERING .................452
  CARGO HANDLING ....................414/137.1+
  DRYDOCKS ..........................405/4+
  EARTH BORING ......................175/5+
  FERTILIZER DERIVED FROM MARINE     71/16
     ANIMALS ........................71/16
  HARVESTERS ........................56/8+
  MERRY GO ROUNDS ...................472/13
  MINES .............................102/406+
  PAINTS ............................106/15.5+
  PROJECTILES .......................102/399
  PROPULSION ........................440
     CHAIN PROPELLER ................440/95+
     CRANK PADDLE ...................440/26+
     MANUAL POWER ...................440/21+
     OSCILLATING PROPELLER ..........440/13+
     PADDLE WHEEL ...................440/90+
     PEDOMOTORS .....................440/30+
     PORTABLE PROPELLER .............440/53+
     RECIPROCATING PROPELLER ........440/13+
     SCREW PROPELLER ................440/49+
     TOWING .........................440/33+
     WAVE PROPULSION ................440/9+
     WIND MOTORS ....................440/8
  RAILWAYS EXTENSIBLE CABLE TYPE ....104/114
  SEARCHLIGHTS ......................362/35
  SIGNALING SEE SIGNAL
  VESSELS AND APPURTENANCES .........114
     TURRETS ........................114/5+

MARIONETTES ......................... 446/363


MARKER
  ANIMAL ............................40/300+
  ANIMAL ............................606/116
     DESIGNS ........................D30/155
  APPAREL ...........................33/2.R+
  BOOK AND PAPER
     BOOKLEAF HOLDER ................281/42
     BOOKMARK .......................116/234+
     INDEXED ........................283/36+
     MUSIC EXPRESSION AND TEMPO .....84/164
     MUSIC VOICE ....................84/165
     WATER MARKING ..................162/110
  CALENDAR ..........................40/110
  CAR AND TRAIN .....................116/30
  CLAPBOARD .........................33/411
  COATING IMPLEMENT       401
     WITH MATERIAL SUPPLY ...........401
  DIRECTION INDICATOR ...............33/332
  GRAVE .............................52/103+
  HEM ...............................33/9.R+
  LAND AND PAVEMENT .................52/103+
     PLANTING .......................111/33
     PLOW COMBINED ..................172/126+
     ROLLER .........................172/539
     TENNIS COURT ...................273/31
     TOOL ...........................404/93+
     TRAFFIC GUIDE ..................404/12+
  MONUMENT ..........................52/103
  POINT GUIDE .......................33/574+
     STYLUS .........................346/139.R+
  POINT, WITH GAUGE .................33/666+
  RECORDER STYLUS ...................346/139.R+
  SCRIBER ...........................33/18.1+
     LINE, INK TYPE .................33/34+
     PARALLEL LINE ..................33/41.1+
       DOTTED .......................33/39.1+
  SEWING ............................112/131
  STITCH, MACHINE FOR ...............112/121.25
  TAG OR LABEL, X-ART ...............493/961*

MARKING
  COMPOSITION .......................106/19.R+
  SAFE COMBINED .....................109/25
  SCALE
     RULER OR SQUARE ................33/483+
  SCRIBERS GEOMETRICAL ..............33/18.1+

MARLINSPIKE ......................... 57/23


MARMARLADE SEE JAMS

MARQUETRY (SEE PARQUETRY)

MARQUISETTE ......................... 139/419
  MAKING ............................139/50+

MARTINGALE .......................... 54/35

MASCARA
  COSMETIC ..........................D28/4+

MASER TYPE AMPLIFIER ................ 330/4+
  DESIGN ............................D13/101

MASER TYPE OSCILLATOR ............... 331/94.1+

MASHER .............................. 241/169.2

MASHING ............................. 435/93
  BEVERAGE PREPARATION ..............426/11
  KITCHEN HAND TOOL .................D07/682


MASK (SEE FACE GUARDS)
  BASEBALL ..........................2/9
  FALSE FACES .......................2/206
  FIRE FIGHTING .....................D29/7+
  GAS MASK ..........................425/815*
  HEAD COVERING WITH ................2/173
  PHOTOGRAPHIC ......................430/5
  RESPIRATORS .......................128/206.12+
  SURGICAL OR OXYGEN ................D29/7+
  SWIMMING ..........................D29/8+

MASKING
  ABRADING ..........................51/310+
  COATING ...........................427/259
  DYEING ............................8/445+
  ELECTROLYSIS COMBINED .............205/118+
  ETCHING COMBINED ..................156/654+
  TAPE ..............................428/343+
     MAKING BY COATING ..............427/207.1+
  TEMPLET ...........................132/319
  TO FORM NONUNIFORM COATING ........427/259

MASONRY (SEE FURNACE) ............... 52
  DESIGN ............................D25
  FURNACES ..........................432/247+
  PIPES AND TUBULAR CONDUITS ........138/175+

MASS (SEE COMPOSITION)
  MASS-ACTION PHENOMENON IN          585/954*
     HYDROCARBON SYNTHESIS ..........585/954*
  METAL FIBERS ......................428/605
  STRUCTURALLY DEFINED ..............428/357+

MASS SPECTROMETRY
  ION SOURCE FOR ....................313/564
     ELECTRICAL SYSTEM FOR ..........315/111.81
     HAVING HEATING MEANS ...........313/550
     WITH SPECTROMETER ..............250/281+


MASSAGE
  KINESIATRIC .......................128/24.R+
  MASSAGE BRUSH .....................D04
  MASSAGER ..........................D24/215
  TOOL BRUSH COMBINED ...............15/110

MAST (SEE POLE; POST; TOWER) ........ 52
  ARTICLE SUPPORTING ................52/40
  CRANE .............................212/266+
     COLLAPSIBLE ....................212/183
     ROTARY CRANE MAST JACK .........212/199+
  EXTENSIBLE ........................52/111+
     HORIZONTALLY ...................182/62.5
  OPENWORK ..........................52/651.1+
  PLATFORM ..........................182/222+
  SHIP ..............................114/90+
     TRAVELER SAIL ..................114/112
  TRANSPORTABLE .....................52/111+
  TYPE ANTENNA ......................343/874+

MAT (SEE PAD)
  AIRFIELD LANDING TYPE .............404/35+
  ARMORED TIRE TYPE DETACHABLE ......152/171+
     CASING CONSTRUCTION ............152/201
  BATHTUB ...........................4/581
  BED GROUND ........................5/417+
  BLASTING ..........................102/303
  CARPET OR FLOOR RUG TYPE ..........D06/582+
  COIN PICKUP TYPE ..................206+
  DOOR ..............................15/215+
     SCRAPERS .......................15/238+
  ELECTRIC FLOOR ....................20/86.R
     BURGLAR ALARM ..................340/565
  EXPRESSING PRESS ..................10/297
  FLOOR .............................52/660+
     DESIGN .........................D06/582+
  MARINE ............................114/229
  PICTURE FRAME .....................40/158.1+
  PLACEMAT ..........................D06/613+
  RAILWAY TRACK .....................238/14
  SINK LINING MAT ...................D32/57
  STOVE .............................126/221
  TABLE OR COUNTER ..................248/346.1
  VEHICLE FLOOR MAT .................D12/203
  WIPING OR CLEANING TYPE ...........15/215+
     BOOT OR SHOE SCRAPER ...........15/238+
     DESIGN, VEHICLE ................D12/203


MATCH ............................... 44/507+
  BOOK ..............................206/104+
     DESIGN .........................D09/304
     MAKING .........................53/394+
       METHODS ......................53/395
  BOX HOLDERS .......................206/127+
     MATCHBOX DESIGN ................D09/414+
     X-ART ..........................493/915*
  CIGAR OR CIGARETTE COMBINED .......131/351
  CIGARETTE PACKAGE COMBINED ........206/85+
  COMPOSITIONS ......................149
  DESIGN ............................D27/139+
  HOLDER
     ASH RECEIVER COMBINED ..........131/239
     CIGAR CUTTER COMBINED ..........131/251
     WALL MOUNTED ...................206/127
  MAKING ............................144/50+
  PROTECTIVE COVER DESIGN ...........D27/173
  RECEPTACLE FILLING WITH ...........53/236
     BOOKS ..........................53/142+
  SAFES .............................206/96+
     DESIGN .........................D27/173+
  SCRATCHERS ........................44/643
     ASH RECEIVER ...................131/234
     CIGAR CUTTER ...................131/249
     LAMP COMBINED ..................431/250
     WITH MATCH MOVER ...............431/269
  SMOKING DEVICE COMBINED ...........131/185
  TOBACCO RECEPTACLE COMBINED .......206/85+

!MATCHING MACHINE WOODWORKING ........ 144/90.R+
  PLANING COMBINED ..................144/36+