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physics (362) 362
heating (267) 267
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lighting (265) 265
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human necessities (197) 197
positive displacement machines for liquids (194) 194
pumps for liquids or elastic fluids (194) 194
rotary-piston, or oscillating-piston, positive-displacementmachines for liquids (191) 191
rotary-piston, or oscillating-piston, positive-displacementpumps (191) 191
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general tagging of cross-sectional technologies spanning over several sections of the ipc (67) 67
general tagging of new technological developments (67) 67
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (67) 67
measuring (64) 64
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aged (59) 59
combined heating and refrigeration systems (58) 58
heat pump systems (58) 58
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liquefaction solidification of gases (58) 58
manufacture or storage of ice (58) 58
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pumps (54) 54
animals (52) 52
adult (46) 46
electric solid state devices not otherwise provided for (46) 46
semiconductor devices (46) 46
adhesives (45) 45
chemical or physical treatment of cork, cane, reed, straw orsimilar materials (44) 44
nailing or stapling machines in general (44) 44
processes, apparatus or selection of substances forimpregnating, staining, dyeing, bleaching of wood or similarmaterials, or treating of wood or similar materials withpermeant liquids, not otherwise provided for (44) 44
working or preserving wood or similar material (44) 44
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their treatment, not covered by other classes (43) 43
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technologies or applications for mitigation or adaptation againstclimate change (40) 40
cardiovascular system & cardiology (39) 39
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handling record carriers (39) 39
information storage (39) 39
presentation of data (39) 39
recognition of data (39) 39
record carriers (39) 39
static stores (39) 39
electric digital data processing (35) 35
materials for miscellaneous applications, not provided forelsewhere (35) 35
technology (34) 34
cardiac & cardiovascular systems (33) 33
combustion engines (33) 33
hot-gas or combustion-product engine plants (33) 33
casting (32) 32
fuels (32) 32
pictorial communication, e.g. television (32) 32
powder metallurgy (32) 32
foods, foodstuffs, or non-alcoholic beverages, not covered bysubclasses a23b - a23j (31) 31
preservation of foods or foodstuffs, in general (31) 31
their preparation or treatment, e.g. cooking, modification ofnutritive qualities, physical treatment (31) 31
treatment outcome (31) 31
analysis (30) 30
ranges (29) 29
ventilating (29) 29
atrial fibrillation (28) 28
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English (1674) 1674
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