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electricity (966935) 966935
generation (536776) 536776
conversion or distribution of electric power (536485) 536485
physics (341232) 341232
basic electric elements (254181) 254181
circuit arrangements or systems for supplying or distributingelectric power (225224) 225224
systems for storing electric energy (225224) 225224
electric utilities (189234) 189234
transporting (181943) 181943
performing operations (181929) 181929
apparatus for conversion between ac and ac, between ac and dc,or between dc and dc, and for use with mains or similar powersupply systems (157315) 157315
control or regulation thereof (157315) 157315
conversion of dc or ac input power into surge outputpower (157315) 157315
electric communication technique (141413) 141413
vehicles in general (133505) 133505
electric techniques not otherwise provided for (128725) 128725
science & technology (111176) 111176
counting (110555) 110555
computing (110475) 110475
calculating (110455) 110455
testing (110398) 110398
measuring (108514) 108514
mechanical engineering (102117) 102117
heating (101655) 101655
lighting (101390) 101390
weapons (99785) 99785
blasting (98563) 98563
electric digital data processing (97870) 97870
technology (97162) 97162
electric equipment or propulsion of electrically-propelledvehicles (95335) 95335
electrodynamic brake systems for vehicles, in general (95335) 95335
magnetic suspension or levitation for vehicles (95335) 95335
general tagging of cross-sectional technologies spanning over several sections of the ipc (90891) 90891
general tagging of new technological developments (90891) 90891
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (90891) 90891
measuring electric variables (88776) 88776
measuring magnetic variables (88776) 88776
electric heating (87408) 87408
electric lighting not otherwise provided for (87161) 87161
engineering (81009) 81009
technologies or applications for mitigation or adaptation againstclimate change (80109) 80109
electric power (73408) 73408
semiconductor devices (72312) 72312
electric solid state devices not otherwise provided for (70695) 70695
controlling (69853) 69853
regulating (69853) 69853
electrical equipment and supplies industry (64919) 64919
arrangement or mounting of plural diverse prime-movers invehicles (63109) 63109
arrangement or mounting of propulsion units or oftransmissions in vehicles (63109) 63109
arrangements in connection with cooling, air intake, gasexhaust or fuel supply of propulsion units, in vehicles (63109) 63109
auxiliary drives for vehicles (63109) 63109
instrumentation or dashboards for vehicles (63109) 63109
processes or means, e.g. batteries, for the direct conversionof chemical into electrical energy (61406) 61406
engineering, electrical & electronic (60669) 60669
emergency protective circuit arrangements (59334) 59334
control or regulation of electric motors, electric generatorsor dynamo-electric converters (56901) 56901
controlling transformers, reactors or choke coils (56901) 56901
dynamo-electric machines (45405) 45405
pictorial communication, e.g. television (44681) 44681
basic electronic circuitry (43388) 43388
transmission (43110) 43110
current collectors (41645) 41645
line connectors (41643) 41643
systems for regulating electric or magnetic variables (40495) 40495
power plants (38633) 38633
electric vehicles (38167) 38167
climate change mitigation technologies related totransportation (34121) 34121
electricity distribution (33093) 33093
installation of electric cables or lines, or of combinedoptical and electric cables or lines (32397) 32397
conjoint control of vehicle sub-units of different type ordifferent function (32085) 32085
control systems specially adapted for hybrid vehicles (32085) 32085
road vehicle drive control systems for purposes not related tothe control of a particular sub-unit (32085) 32085
energy industry (30943) 30943
physical sciences (30527) 30527
printed circuits (30444) 30444
casings or constructional details of electric apparatus (29725) 29725
manufacture of assemblages of electrical components (29725) 29725
electric power plants (29374) 29374
chemistry (28564) 28564
transmission of digital information, e.g. telegraphiccommunication (27885) 27885
pulse technique (27629) 27629
human necessities (27249) 27249
intellectual property (26902) 26902
combustion engines (26281) 26281
hot-gas or combustion-product engine plants (26280) 26280
relays (26267) 26267
electric switches (25994) 25994
selectors (25991) 25991
emergency protective devices (25974) 25974
alternative energy sources (24709) 24709
transformers (24013) 24013
power supply (23716) 23716
acquisitions & mergers (23056) 23056
securities analysis (22930) 22930
corporate profiles (22523) 22523
telephonic communication (22354) 22354
magnets (22027) 22027
engineering elements and units (21947) 21947
general measures for producing and maintaining effectivefunctioning of machines or installations (21947) 21947
thermal insulation in general (21947) 21947
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Engineering & Comp. Sci. - Stacks (880) 880
Online Resources - Online (688) 688
UTL at Downsview - May be requested (366) 366
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Royal Ontario Museum - Periodical Stacks (1) 1
Scarborough Hospital - Online (1) 1
Thomas Fisher Rare Book - May be requested at Fisher (1) 1
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1831, 21
"This indenture, made this [blank] day of [blank] A.D. by and between the The [sic] Norwich Water Power Company, of the one part, and [blank... 
Finance | Electric utilities
eBook
10/1848, Volume 4, Issue 5
.... Galvanism and Electricity, in some res- pects are alike, and in others they are not.- Galvanism is continuous in its supply-elec- tricity is not. Galvanism can produce ... 
Telegraph | Electricity | Ivory | Canals | Potash | Tin | Magnetism | Waxes | Magnets | Electric current
Magazine Article
New England Medical Eclectic, and Guide to Health, 06/1851, Volume V, Issue 6, p. 187
Journal Article
1854, 15
...0001 69.1 English THE SUNBURY CANAL AND WATER-POWER COMPANY, AND SUNBURY LUMBER AND CAR MANUFACTURING COMPANY. 5I4AUUN W0 N odP.ITM.OFCIILL ULIG l3bilatilpl)ia... 
Railroads | Finance | Automobile industry | Canals | Science | Electric utilities | Lumber industry
eBook
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