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science & technology (427) 427
chemistry (344) 344
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semiconductor devices (252) 252
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general tagging of cross-sectional technologies spanning over several sections of the ipc (84) 84
general tagging of new technological developments (84) 84
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (84) 84
organic chemistry (83) 83
physical or chemical processes or apparatus in general (81) 81
coffee mills (77) 77
domestic articles or appliances (77) 77
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spice mills (77) 77
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treatment of water, waste water, sewage, or sludge (74) 74
engineering, electrical & electronic (72) 72
surgery (71) 71
adult (69) 69
science & technology - other topics (69) 69
lighting (67) 67
technologies or applications for mitigation or adaptation againstclimate change (67) 67
chemistry, multidisciplinary (64) 64
heating (61) 61
gastroenterology & hepatology (60) 60
blasting (59) 59
electric communication technique (59) 59
mechanical engineering (59) 59
weapons (59) 59
dyes (58) 58
nanoscience & nanotechnology (58) 58
separation (56) 56
gastroenterology and hepatology (55) 55
measuring (55) 55
testing (55) 55
adhesives (54) 54
miscellaneous applications of materials (53) 53
miscellaneous compositions (53) 53
natural resins (53) 53
paints (53) 53
polishes (53) 53
hygiene (52) 52
medical or veterinary science (51) 51
heterocyclic compounds (50) 50
materials for miscellaneous applications, not provided forelsewhere (49) 49
calculating (48) 48
computing (48) 48
counting (48) 48
transistors (47) 47
optics (45) 45
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animals (41) 41
compositions based thereon (40) 40
endoscopy (40) 40
organic macromolecular compounds (40) 40
their preparation or chemical working-up (40) 40
thin film transistors (39) 39
analysis (38) 38
biological and medical sciences (37) 37
physics, condensed matter (35) 35
preparations for medical, dental, or toilet purposes (35) 35
medical sciences (33) 33
macromolecular compounds obtained by reactions only involvingcarbon-to-carbon unsaturated bonds (32) 32
nanostructure (32) 32
stomach neoplasms - pathology (32) 32
abridged index medicus (31) 31
exact sciences and technology (31) 31
logic gates (31) 31
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original article (30) 30
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aged, 80 and over (29) 29
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chemistry, physical (29) 29
devices or arrangements, the optical operation of which ismodified by changing the optical properties of the medium of thedevices or arrangements for the control of the intensity,colour, phase, polarisation or direction of light, e.g.switching, gating, modulating or demodulating (29) 29
frequency-changing (29) 29
non-linear optics (29) 29
optical analogue/digital converters (29) 29
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Spanish (1) 1
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