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Patent (1513005) 1513005
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printed circuits (1542051) 1542051
electricity (1508295) 1508295
electric techniques not otherwise provided for (1503862) 1503862
casings or constructional details of electric apparatus (1503818) 1503818
manufacture of assemblages of electrical components (1503818) 1503818
basic electric elements (516731) 516731
physics (324695) 324695
performing operations (300259) 300259
transporting (300259) 300259
semiconductor devices (295420) 295420
electric solid state devices not otherwise provided for (295009) 295009
chemistry (175483) 175483
general tagging of cross-sectional technologies spanning over several sections of the ipc (174848) 174848
general tagging of new technological developments (174848) 174848
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (174848) 174848
metallurgy (174574) 174574
technical subjects covered by former uspc (146023) 146023
counting (130780) 130780
computing (130763) 130763
calculating (130759) 130759
technical subjects covered by former us classification (130020) 130020
current collectors (105649) 105649
line connectors (105649) 105649
electric digital data processing (105355) 105355
lighting (104779) 104779
mechanical engineering (103752) 103752
heating (103737) 103737
weapons (103420) 103420
blasting (103408) 103408
electric communication technique (90038) 90038
generation (87132) 87132
conversion or distribution of electric power (87130) 87130
machine tools (74984) 74984
metal-working not otherwise provided for (74960) 74960
compositions based thereon (68919) 68919
organic macromolecular compounds (68919) 68919
their preparation or chemical working-up (68919) 68919
layered products (68414) 68414
layered products, i.e. products built-up of strata of flat ornon-flat, e.g. cellular or honeycomb, form (68414) 68414
printed circuit boards (64042) 64042
testing (57513) 57513
measuring (56541) 56541
welding (51967) 51967
cladding or plating by soldering or welding (51898) 51898
cutting by applying heat locally, e.g. flame cutting (51898) 51898
soldering or unsoldering (51898) 51898
working by laser beam (51898) 51898
cables (51376) 51376
conductors (51230) 51230
insulators (50657) 50657
selection of materials for their conductive, insulating ordielectric properties (50615) 50615
optics (46296) 46296
holography (45131) 45131
photography (45111) 45111
cinematography (45089) 45089
electrography (45089) 45089
adhesives (44597) 44597
chemical surface treatment (43303) 43303
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (43303) 43303
coating material with metallic material (43303) 43303
coating metallic material (43303) 43303
diffusion treatment of metallic material (43303) 43303
inhibiting corrosion of metallic material or incrustation ingeneral (43303) 43303
paints (43099) 43099
dyes (43097) 43097
polishes (43090) 43090
miscellaneous applications of materials (43089) 43089
miscellaneous compositions (43089) 43089
natural resins (43089) 43089
compositions of macromolecular compounds (37056) 37056
technologies or applications for mitigation or adaptation againstclimate change (36375) 36375
engineering elements and units (34964) 34964
general measures for producing and maintaining effectivefunctioning of machines or installations (34964) 34964
thermal insulation in general (34964) 34964
display (34190) 34190
education (34186) 34186
cryptography (34120) 34120
advertising (34103) 34103
seals (34091) 34091
conveying (33940) 33940
packing (33938) 33938
handling thin or filamentary material (33937) 33937
storing (33937) 33937
apparatus specially adapted therefor (32440) 32440
materials therefor (32432) 32432
originals therefor (32432) 32432
photomechanical production of textured or patterned surfaces,e.g. for printing, for processing of semiconductordevices (32432) 32432
coating by vacuum evaporation, by sputtering, by ionimplantation or by chemical vapour deposition, in general (32051) 32051
surface treatment of metallic material by diffusion into thesurface, by chemical conversion or substitution (32051) 32051
macromolecular compounds obtained otherwise than by reactionsonly involving unsaturated carbon-to-carbon bonds (31178) 31178
inventors (31022) 31022
human necessities (29889) 29889
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (29613) 29613
printing (29250) 29250
signs (29195) 29195
displaying (29178) 29178
labels or name-plates (29178) 29178
typewriters (28846) 28846
lining machines (28841) 28841
stamps (28841) 28841
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Engineering & Comp. Sci. - Stacks (124) 124
Online Resources - Online (105) 105
UTL at Downsview - May be requested (30) 30
Collection Dvlpm't (Acquisitions) - Vendor file (19) 19
Collection Dvlpm't (Acquisitions) - Closed Orders (9) 9
Music - Stacks (6) 6
Robarts - Stacks (5) 5
Engineering & Comp. Sci. - May be requested in 6-10 wks (4) 4
Aerospace - Stacks (2) 2
UofT at Scarborough - Stacks (2) 2
Collection Dvlpm't (Acquisitions) - Cancelled Order (1) 1
Engineering & Comp. Sci. - Missing (1) 1
Engineering & Comp. Sci. - Not Returned (1) 1
Engineering & Comp. Sci. - Periodical Stacks (1) 1
Engineering & Comp. Sci. - Searching (1) 1
Gerstein Science - Stacks (1) 1
Innis College - Stacks (1) 1
Music - Not Returned (1) 1
Robarts - Searching (1) 1
Trinity College (John W Graham) - Stacks (1) 1
UofT at Mississauga - Not Returned (1) 1
Victoria University E.J. Pratt - Stacks (1) 1
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English (1451058) 1451058
Chinese (290797) 290797
French (164435) 164435
German (151520) 151520
Japanese (76969) 76969
Korean (63866) 63866
Spanish (8901) 8901
Russian (6208) 6208
Portuguese (4466) 4466
Swedish (3903) 3903
Italian (3703) 3703
Finnish (2594) 2594
Dutch (1981) 1981
Danish (1761) 1761
Norwegian (1134) 1134
Polish (1022) 1022
Czech (342) 342
Turkish (251) 251
Hungarian (247) 247
Romanian (142) 142
Ukrainian (116) 116
Indonesian (113) 113
Hebrew (107) 107
Slovenian (105) 105
Slovak (70) 70
Bulgarian (57) 57
Estonian (48) 48
Greek (48) 48
Croatian (25) 25
Lithuanian (25) 25
Serbian (20) 20
Arabic (11) 11
Icelandic (5) 5
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Bosnian (3) 3
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Hindi (1) 1
Persian (1) 1
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