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mechanical engineering (3362428) 3362428
heating (3356797) 3356797
lighting (3355827) 3355827
weapons (3355824) 3355824
blasting (3355279) 3355279
combustion engines (1903601) 1903601
hot-gas or combustion-product engine plants (1903465) 1903465
steam engines (1298293) 1298293
engine plants in general (1296041) 1296041
machines or engines in general (1296041) 1296041
general tagging of cross-sectional technologies spanning over several sections of the ipc (791422) 791422
general tagging of new technological developments (791422) 791422
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (791422) 791422
technologies or applications for mitigation or adaptation againstclimate change (630185) 630185
supplying combustion engines in general, with combustiblemixtures or constituents thereof (619304) 619304
transporting (608651) 608651
performing operations (608646) 608646
controlling combustion engines (570260) 570260
combustion engines in general (541117) 541117
internal-combustion piston engines (541117) 541117
engineering elements and units (525532) 525532
general measures for producing and maintaining effectivefunctioning of machines or installations (525532) 525532
thermal insulation in general (525532) 525532
climate change mitigation technologies related totransportation (479273) 479273
machines or engines for liquids (376469) 376469
or a reactive propulsive thrust, not otherwise provided for (376469) 376469
producing mechanical power (376469) 376469
wind, spring weight and miscellaneous motors (376469) 376469
gas-flow silencers or exhaust apparatus for internalcombustion engines (359597) 359597
gas-flow silencers or exhaust apparatus for machines orengines in general (359597) 359597
non-positive displacement machines or engines, e.g. steamturbines (330259) 330259
physics (248498) 248498
indexing schemes relating to engines or pumps in varioussubclasses of classes f01-f04 (247424) 247424
air intakes for jet-propulsion plants (219982) 219982
controlling fuel supply in air-breathing jet-propulsion plants (219982) 219982
gas-turbine plants (219982) 219982
electricity (216672) 216672
technical subjects covered by former uspc (212043) 212043
frames, casings, or beds of engines or other machines orapparatus not specific to an engine, machine, or apparatusprovided for elsewhere (210666) 210666
stands or supports (210666) 210666
positive displacement machines for liquids (209035) 209035
pumps for liquids or elastic fluids (209035) 209035
vehicles in general (200785) 200785
engines (185958) 185958
cyclically operating valves for machines or engines (185223) 185223
wind motors (179670) 179670
arrangements of sealings in combustion engines (163938) 163938
cylinders, pistons or casings, for combustion engines (163938) 163938
physical or chemical processes or apparatus in general (163564) 163564
technical subjects covered by former us classification (163151) 163151
indexing scheme for aspects relating tonon-positive-displacement machines or engines, gas-turbines orjet-propulsion plants (157376) 157376
separation (145901) 145901
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (145478) 145478
cooling of internal-combustion engines (141346) 141346
cooling of machines or engines in general (141346) 141346
ignition, other than compression ignition, forinternal-combustion engines (134109) 134109
testing of ignition timing in compression-ignition engines (134109) 134109
chemistry (132199) 132199
metallurgy (127920) 127920
testing (123193) 123193
crankcase ventilating (122445) 122445
lubricating internal combustion engines (122445) 122445
lubricating of machines or engines in general (122445) 122445
arrangement or mounting of plural diverse prime-movers invehicles (121954) 121954
arrangement or mounting of propulsion units or oftransmissions in vehicles (121954) 121954
arrangements in connection with cooling, air intake, gasexhaust or fuel supply of propulsion units, in vehicles (121954) 121954
auxiliary drives for vehicles (121954) 121954
instrumentation or dashboards for vehicles (121954) 121954
measuring (118387) 118387
generation (107419) 107419
conversion or distribution of electric power (107355) 107355
search engines (99418) 99418
starting aids for such engines, not otherwise providedfor (99098) 99098
starting of combustion engines (99098) 99098
engine plants not otherwise provided for (96807) 96807
engines using special working fluids or cycles (96807) 96807
steam accumulators (96807) 96807
steam engine plants (96807) 96807
non-positive displacement pumps (95827) 95827
gearing (78902) 78902
cylinders (78273) 78273
jet-propulsion plants (78264) 78264
rotary-piston or oscillating-piston machines or engines (77214) 77214
aircraft (71297) 71297
basic electric elements (70307) 70307
mechanical-power producing devices or mechanisms, nototherwise provided for or using energy sources not otherwiseprovided for (70258) 70258
spring, weight, inertia or like motors (70258) 70258
conjoint control of vehicle sub-units of different type ordifferent function (69580) 69580
control systems specially adapted for hybrid vehicles (69580) 69580
road vehicle drive control systems for purposes not related tothe control of a particular sub-unit (69580) 69580
pistons (69573) 69573
pumps (68365) 68365
diesel engines (68353) 68353
indexing scheme relating to machines or engines other thannon-positive-displacement machines or engines, to wind motors,to non-positive displacement pumps, and to generating combustionproducts of high pressure or high velocity (67175) 67175
sealings (65521) 65521
valves (64637) 64637
combustion processes (61066) 61066
combustion apparatus (61057) 61057
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (60030) 60030
aviation (59471) 59471
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Online Resources - Online (25443) 25443
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Thomas Fisher Rare Book - Rare Book (31) 31
St. Michael's College (John M. Kelly) - 2nd Floor (25) 25
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Victoria University Emmanuel College - Reference (1) 1
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English (3366428) 3366428
German (589615) 589615
French (571099) 571099
Chinese (412668) 412668
Japanese (120403) 120403
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Russian (62638) 62638
Spanish (49751) 49751
Portuguese (29088) 29088
Italian (25357) 25357
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Norwegian (5158) 5158
Dutch (4983) 4983
Czech (3049) 3049
Ukrainian (2663) 2663
Romanian (2021) 2021
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Hungarian (1042) 1042
Greek (1012) 1012
Bulgarian (638) 638
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Energies (Basel), 12/2021, Volume 14, Issue 41, p. 41
Journal Article
Journal Article
Journal Article
Journal Article
Atmosphere, 12/2021, Volume 12, Issue 1, p. 1
Journal Article
Processes, 12/2021, Volume 9, Issue 70, p. 70
Journal Article
Energies (Basel), 12/2021, Volume 14, Issue 43, p. 43
Journal Article
Journal Article
Remote sensing (Basel, Switzerland), 12/2021, Volume 13, Issue 10, p. 10
Journal Article
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