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Patent (217505) 217505
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physics (233067) 233067
optics (210219) 210219
education (185836) 185836
cryptography (185819) 185819
display (185769) 185769
advertising (185758) 185758
seals (185752) 185752
arrangements or circuits for control of indicating devicesusing static means to present variable information (183411) 183411
non-linear optics (169558) 169558
optical logic elements (169552) 169552
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 (169551) 169551
frequency-changing (169551) 169551
optical analogue/digital converters (169551) 169551
techniques or procedures for the operation thereof (169551) 169551
electricity (80682) 80682
electric communication technique (49219) 49219
optical elements, systems, or apparatus (48902) 48902
pictorial communication, e.g. television (44838) 44838
science & technology (32989) 32989
signs (26246) 26246
displaying (26244) 26244
labels or name-plates (26244) 26244
basic electric elements (26166) 26166
counting (25807) 25807
computing (25787) 25787
calculating (25781) 25781
holography (24439) 24439
photography (24373) 24373
cinematography (24200) 24200
electrography (24196) 24196
accessories therefor (22210) 22210
apparatus or arrangements employing analogous techniques usingwaves other than optical waves (22198) 22198
apparatus or arrangements for taking photographs or forprojecting or viewing them (22198) 22198
testing (21702) 21702
measuring (21455) 21455
semiconductor devices (20864) 20864
electric solid state devices not otherwise provided for (20725) 20725
electric digital data processing (20372) 20372
physical sciences (18479) 18479
technology (15189) 15189
performing operations (11187) 11187
transporting (11187) 11187
chemistry (11109) 11109
exact sciences and technology (10762) 10762
electric techniques not otherwise provided for (10298) 10298
measuring electric variables (9975) 9975
measuring magnetic variables (9975) 9975
engineering (9686) 9686
life sciences & biomedicine (8566) 8566
optical variables control (8139) 8139
electric heating (7907) 7907
electric lighting not otherwise provided for (7902) 7902
image data processing or generation, in general (7421) 7421
mechanical engineering (7039) 7039
optical refraction (6844) 6844
humans (6383) 6383
lighting (6334) 6334
heating (6298) 6298
materials science (6282) 6282
weapons (6099) 6099
blasting (6097) 6097
information storage (5974) 5974
engineering, electrical & electronic (5817) 5817
physics, applied (5808) 5808
metallurgy (5754) 5754
analysis (5716) 5716
basic electronic circuitry (5677) 5677
controlling (5067) 5067
regulating (5066) 5066
arrangements for measuring two or more variables not coveredin a single other subclass (5002) 5002
measuring not specially adapted for a specific variable (5002) 5002
measuring or testing not otherwise provided for (5002) 5002
tariff metering apparatus (5002) 5002
materials science, multidisciplinary (4740) 4740
optical properties (4706) 4706
general tagging of cross-sectional technologies spanning over several sections of the ipc (4664) 4664
general tagging of new technological developments (4664) 4664
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (4664) 4664
vehicles in general (4541) 4541
applied sciences (4524) 4524
static stores (4403) 4403
male (4354) 4354
female (4309) 4309
functional features or details of lighting devices or systemsthereof (3910) 3910
structural combinations of lighting devices with otherarticles, not otherwise provided for (3910) 3910
human necessities (3887) 3887
characterization and evaluation of materials (3670) 3670
science & technology - other topics (3660) 3660
handling record carriers (3595) 3595
presentation of data (3595) 3595
recognition of data (3595) 3595
record carriers (3595) 3595
systems for controlling or regulating non-electric variables (3511) 3511
electronics (3422) 3422
ophthalmology (3348) 3348
technical subjects covered by former uspc (3290) 3290
surgery (3251) 3251
transmission (3183) 3183
nanotechnology (3175) 3175
organic chemistry (3171) 3171
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Engineering & Comp. Sci. - Stacks (53) 53
Gerstein Science - Stacks (33) 33
UTL at Downsview - May be requested (30) 30
Online Resources - Online (24) 24
Collection Dvlpm't (Acquisitions) - Vendor file (22) 22
Collection Dvlpm't (Acquisitions) - Closed Orders (7) 7
Mathematical Sciences - Stacks (7) 7
Physics - Stacks (7) 7
UofT at Mississauga - Stacks (7) 7
Engineering & Comp. Sci. - May be requested in 6-10 wks (5) 5
Robarts - Stacks (4) 4
Astronomy & Astrophysics - Ask at library (3) 3
UofT at Scarborough - Stacks (3) 3
Aerospace - Stacks (1) 1
Chemistry (A D Allen) - Stacks (1) 1
Gerstein Science - Circulation Desk (1) 1
Media Commons - Microtexts (1) 1
OISE - Stacks (1) 1
Physics - New Books (1) 1
St. Michael's College (John M. Kelly) - 2nd Floor (1) 1
UofT at Scarborough - Withdrawn (1) 1
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English (253742) 253742
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Lithuanian (5) 5
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Arabic (3) 3
Estonian (3) 3
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Icelandic (2) 2
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Latvian (1) 1
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