P romoter - Class 438
P/N JUNCTION - Class 117
PAC - Class 438
PACKAGE - Classes 053, 257, 426, 438
PAD - Classes 257, 438
PADDLE - Class 440
PAGE - Class 400
PAGE(*) - Class 412
PALLET - Class 425
PALMITIC ACID; PALMITATE - Class 516
PANEL - Classes 049, 112, 249
PANEL (SEE MODULE) - Class 052
PAP - Class 438
PAPER - Class 428
PAPER-FINGER - Class 400
PARAMAGNETISM - Class 428
PARASITIC CURRENT - Class 257
PARASITIC DEVICES/CHANNELS - Class 257
PARASITIC DEVICES/CHANNELS - Class 438
PARASITIC ELEMENT - Class 343
PARASITIC REACTANCE, IMPEDANCE, CAPACITANCE, OR INDUCTANCE - Class 330
PARASITIC THYRISTOR ACTION - Class 257
PARASITIC TRANSISTOR ACTION - Class 257
PARISON - Classes 065, 425
PART(S) - Class 277
PARTICLE - Class 428
PARTICULAR ATTACHMENT METHOD - Class 506
PARTICULATE MATERIAL - Class 425
PARTING LAYER - Class 065
PARTING MATERIAL - Class 425
PARTITION - Class 249
PARTITION MEMBER - Class 418
PASSAGE - Class 137
PASSAGEWAY - Class 072
PASSIVE DEVICE - Classes 257, 438
PASSIVE INDUCTOR - Class 336
PASSIVE NETWORK - Classes 330, 333
PASTE MOLD - Class 065
PATENTING - Class 148
PATTERN - Classes 164, 234
PATTERN PLATE - Class 164
PATTERN* - Class 382
PATTERN*RECOGNITION* - Class 382
PATTERN-FIELD - Class 234
PATTERN-SENSER - Class 234
PAVEMENT - Class 404
PAWL - Class 400
PAYLOAD - Class 102
PAY-PER-VIEW (PPV) - Class 725
PBG - Class 438
PBL - Class 438
PBM - Class 438
PBN - Class 438
PBT - Class 438
PCB - Class 438
PCE - Class 438
P-CHANNEL - Classes 257, 438
PEB - Class 438
PECVD - Classes 117, 438
PELTIER EFFECT - Class 117
PENETRATE - Class 227
PEP - Class 438
PEPTIDE; POLYPEPTIDE - Class 516
PEPTIDES - Class 930
PERIODIC TABLE - Class 208
PERIPHERAL - Classes 345, 706, 707, 709, 710, 711, 712, 713, 714, 718, 719, 902
PERISTALTIC CCD - Class 257
PERMANENT COATING - Class 204
PERMEABLE - Class 210
PERMEATE - Class 210
PERMISSIBLE ENERGY LEVEL - Class 257
PERMUTATION - Class 070
PERSONAL COMPUTER (PC) - Class 725
PERSONAL IDENTIFICATION NUMBER (PIN) - Class 725
PETROLEUM, PETROLEUM OIL - Class 516
PFT - Class 438
PGA - Class 438
PGMA - Class 438
pH - Class 210
PHASE CONTROL - Class 323
PHASE CONVERSION - Class 363
PHASE DISTORTION - Class 333
PHASE DISTORTION CHARACTERISTIC - Class 333
PHASE LOCKED LOOP - Class 388
PHASE SHIFT - Classes 330, 333
PHENOLIC REACTANT - Class 520
PHENOLIC-OXY - Class 260
Phon - Class 704
PHOTOCELL - Class 250
PHOTO-CELLS - Class 313
PHOTOCONDUCTIVE MATERIAL - Class 399
PHOTOCONDUCTIVE MEMBER - Class 399
PHOTODETECTOR - Class 250
PHOTODIODE - Classes 257, 438
PHOTOELECTRIC CELL - Class 250
PHOTOGRAPHIC MEDIUM - Class 396
PHOTORECEPTOR - Class 355
PHOTO-SENSITIVE - Class 313
PHOTO-SENSITIVE CATHODE - Class 313
PHOTO-SENSITIVE ELECTRODE - Class 313
PHOTOSENSOR - Class 250
PHOTOTRANSISTOR - Class 257
PHOTOVOLTAIC CELL - Class 257
PHS - Class 438
PIC - Class 438
PICKUP TUBE - Class 348
PID - Class 438
PIERCE - Class 072
PILOT BURNER - Class 431
PIN - Class 438
PIN DIODE/DEVICE - Class 257
PIN DIODE/DEVICE - Class 438
PIN* - Class 024
PINCH EFFECT - Class 376
PINCH-EFFECT RESISTOR - Classes 257, 438
PINCH-OFF - Class 257
PIN-GRID ARRAY - Classes 257, 438
PIPE - Class 164
PIQ - Class 438
PISTON - Class 092
PITCH - Classes 400, 704
PITCH (GEOMETRICAL) - Class 416
PIXEL OR ELEMENT RATE - Class 348
PIXEL* - Class 382
PLA - Class 438
PLANAR TRANSISTOR - Classes 257, 438
PLANET CARRIER - Class 475
PLANET PINION - Class 475
PLANT - Class 504
PLANT GROWTH - Class 504
PLASMA - Classes 216, 373, 376
PLASTIC ARTICLE OR EARTHENWARE - Class 425
PLASTICITY - Class 425
PLATE - Class 029
PLATEN - Classes 355, 399, 400, 425
PLATINUM GROUP* - Class 075
PLATINUM METAL - Class 204
PLATINUM METALS - Class 423
PLCC - Class 438
PLDD - Class 438
PLM - Class 438
PLUG-IN PACKAGE - Class 257
PLURAL AMPLIFIER CHANNELS - Class 330
PLURAL TOOL SET - Class 072
PLZT - Class 438
PMMA - Class 438
PMOS - Class 438
P-MOSFET - Class 257
PN-JUNCTION - Classes 257, 438
PN-JUNCTION DIODE - Classes 257, 438
PNP - Class 438
PNP TRANSISTOR - Classes 257, 438
POINT CONTACT TRANSISTOR - Class 330
POINT DEFECT - Classes 257, 438
POLARIZATION - Classes 359, 725
POLICY - Class 726
POLISHING - Class 210
POLL - Class 725
POLY(AMIDO-ESTER) - Class 428
POLYAMIDE - Class 428
polycide - Class 438
POLYCRYSTALLINE - Class 257
POLYCYCLO RING SYSTEM - Classes 514, 532
POLYEPOXIDE - Class 520
POLYESTER - Class 428
POLYIMICAL - Class 428
POLYMER - Class 977
polySi - Class 438
POLYSILICON - Classes 257, 438
PONTILE - Class 065
PORE - Class 428
PORE FORMING (POROUS, MULTICELLULAR) - Class 501
PORTAL - Classes 049, 052
PORTIONS - Class 347
POSITIVE CARRIER - Class 257
POSITIVE FEEDBACK - Class 330
POSITIVE IONS - Class 257
POTENTIAL BARRIER - Classes 257, 438
POTENTIAL HILL - Class 257
POTENTIATOR OR SYNERGIST - Class 424
POTENTIATOR or SYNERGIST - Class 504
POTENTIOMETER - Class 330
POTTING - Classes 257, 438
POWDER - Class 428
POWER FLUID - Class 060
POWER INPUT - Class 137
POWER OUTPUT - Class 137
POWER SOURCE - Class 475
POWER SUPPLY - Class 330
POWER: - Classes 073, 073
PPL - Class 438
PR - Class 438
PRACTICE - Class 705
PRECIOUS METAL - Classes 075, 204, 420
PRECIPITATION HARDENING - Class 148
PRECURSOR - Class 117
PREFILT - Class 210
PREFORM - Classes 065, 249, 264, 425
PREFORM OR PRESHAPE - Class 052
PREFORMED PRODUCT PART - Class 164
PRESENTATION - Class 715
PRESENTATION PROCESSING - Class 715
PRESS MOLDING - Class 065
PRIMARY CELL OR BATTERY - Class 320
PRINCIPAL ELECTRODES - Class 315
PRINTED CIRCUIT BOARD - Classes 257, 438, 439
PRINT-LINE - Class 400
PRINT-POINT - Class 400
PRISMATIC LENS - Class 351
PROCESS - Classes 709, 718, 719
PROCESSING - Classes 345, 706, 707, 709, 710, 711, 712, 713, 714, 715, 718, 719
PROCESSOR - Classes 345, 706, 707, 709, 710, 711, 712, 713, 714, 715, 718, 719
PRODUCT - Classes 072, 083, 227, 228, 234, 269, 408, 425
PROFILE - Classes 425, 725
PROGRAM - Class 234
pROGRAM - Class 713
PROGRAM - Class 725
PROGRAMMED-CONTROL-SYSTEM - Class 400
PROJECTION OBJECTIVE OR PROJECTION LENS SYSTEM - Class 355
PROJECTION OBJECTIVE OR PROJECTION LENS SYSTEMS - Class 353
PROJECTION PRINTER - Class 355
PROJECTOR OR STEREOPTICON - Class 353
PROJECTOR, MOTION PICTURE - Class 352
PROM - Class 438
PROMOTER - Class 423
PROPELLANT - Class 060
PROPELLING MEANS - Class 440
PROPS - Class 438
PROPULSION UNIT - Class 440
PROTEIN - Class 520
PROTEIN FOLDING - Class 977
PROTEIN or PEPTIDE - Class 977
PROTEINS - Class 930
PROTOCOL - Classes 370, 709, 718, 719
PSD - Class 438
PSG - Class 438
PTC - Class 438
PTH - Class 438
P-TYPE - Class 438
P-TYPE CONDUCTIVITY - Classes 257, 330
P-TYPE SEMICONDUCTOR - Class 257
PULL TAB - Class 413
PULLEY - Class 474
PULSATING CURRENT - Class 363
PULSATOR SYSTEM - Class 060
PULSE - Class 375
PULSE FLUID - Class 060
PULSE WAVE - Classes 329, 332
PUMP - Class 415
PUNCHING - Class 083
PUNCHTHROUGH - Classes 257, 438
PUNTY - Class 065
PURGING - Class 431
PURIFY - Class 065
PURPLE PLAGUE - Class 257
PUSH-PULL STAGE - Class 330
PUT - Class 438
PVD - Class 438
PWB - Class 438
PYRO-ELECTRIC LAMP - Class 313
PYROMETALLURGY - Class 075
PZT - Class 438