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blasting (243661) 243661
details or accessories of furnaces, kilns, ovens, or retorts,in so far as they are of kinds occurring in more than one kindof furnace (243661) 243661
furnaces (243661) 243661
heating (243661) 243661
kilns (243661) 243661
lighting (243661) 243661
mechanical engineering (243661) 243661
ovens (243661) 243661
retorts (243661) 243661
weapons (243661) 243661
chemistry (118038) 118038
metallurgy (118038) 118038
furnaces, kilns, ovens, or retorts in general (89558) 89558
open sintering or like apparatus (89558) 89558
metallurgy of iron (66970) 66970
performing operations (53440) 53440
transporting (53440) 53440
general tagging of cross-sectional technologies spanning over several sections of the ipc (37334) 37334
general tagging of new technological developments (37334) 37334
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (37334) 37334
technologies or applications for mitigation or adaptation againstclimate change (32113) 32113
processing of pig-iron, e.g. refining, manufacture ofwrought-iron or steel (31023) 31023
treatment in molten state of ferrous alloys (31023) 31023
climate change mitigation technologies in the production orprocessing of goods (29509) 29509
electricity (27129) 27129
artificial stone (25568) 25568
cements (25568) 25568
ceramics (25568) 25568
compositions thereof, e.g. mortars, concrete or like buildingmaterials (25568) 25568
concrete (25568) 25568
lime, magnesia (25568) 25568
refractories (25568) 25568
slag (25568) 25568
treatment of natural stone (25568) 25568
manufacture of iron or steel (23859) 23859
ferrous or non-ferrous alloys (21605) 21605
treatment of alloys or non-ferrous metals (21605) 21605
electric techniques not otherwise provided for (20619) 20619
combustion apparatus (20084) 20084
combustion processes (20084) 20084
electric heating (19613) 19613
electric lighting not otherwise provided for (19613) 19613
casting (19561) 19561
powder metallurgy (19561) 19561
pretreatment of raw materials (18881) 18881
production and refining of metals (18881) 18881
general devices for heat treatment of ferrous or non-ferrousmetals or alloys (17884) 17884
making metal malleable by decarburisation, tempering or othertreatments (17884) 17884
modifying the physical structure of ferrous metals (17884) 17884
casting of metals (16709) 16709
casting of other substances by the same processes or devices (16709) 16709
physical or chemical processes or apparatus in general (13735) 13735
physics (10977) 10977
glass (7161) 7161
mineral or slag wool (7161) 7161
measuring (7158) 7158
testing (7158) 7158
basic electric elements (7089) 7089
conveying (7054) 7054
handling thin or filamentary material (7054) 7054
packing (7054) 7054
storing (7054) 7054
technical subjects covered by former uspc (6832) 6832
manufacture, shaping, or supplementary processes (6815) 6815
chemical or physical processes, e.g. catalysis or colloidchemistry (6410) 6410
their relevant apparatus (6410) 6410
separation (6198) 6198
pneumatic tube conveyors (5969) 5969
shop conveyor systems (5969) 5969
transport or storage devices, e.g. conveyors for loading ortipping (5969) 5969
heat exchange in general (5928) 5928
fuels (5505) 5505
lubricants (5505) 5505
peat (5505) 5505
petroleum, gas or coke industries (5505) 5505
technical gases containing carbon monoxide (5505) 5505
consuming waste products by combustion (5360) 5360
cremation furnaces (5360) 5360
engineering elements and units (5094) 5094
general measures for producing and maintaining effectivefunctioning of machines or installations (5094) 5094
thermal insulation in general (5094) 5094
chemical surface treatment (4986) 4986
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (4986) 4986
coating material with metallic material (4986) 4986
coating metallic material (4986) 4986
diffusion treatment of metallic material (4986) 4986
inhibiting corrosion of metallic material or incrustation ingeneral (4986) 4986
inorganic chemistry (4856) 4856
electric solid state devices not otherwise provided for (4791) 4791
semiconductor devices (4791) 4791
casings, linings, walls or doors specially adapted forcombustion chambers, e.g. firebridges (4773) 4773
details of combustion chambers, not otherwise providedfor (4773) 4773
devices for deflecting air, flames or combustion products incombustion chambers (4773) 4773
safety arrangements specially adapted for combustionapparatus (4773) 4773
coating by vacuum evaporation, by sputtering, by ionimplantation or by chemical vapour deposition, in general (4694) 4694
surface treatment of metallic material by diffusion into thesurface, by chemical conversion or substitution (4694) 4694
flues (4649) 4649
removal or treatment of combustion products or combustionresidues (4649) 4649
compounds thereof (3967) 3967
technical subjects covered by former us classification (3944) 3944
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English (195430) 195430
Chinese (47173) 47173
German (29974) 29974
French (29589) 29589
Korean (7249) 7249
Japanese (5863) 5863
Spanish (5468) 5468
Russian (4776) 4776
Portuguese (3252) 3252
Swedish (2065) 2065
Italian (1686) 1686
Finnish (1241) 1241
Norwegian (981) 981
Danish (921) 921
Dutch (747) 747
Polish (731) 731
Ukrainian (441) 441
Czech (356) 356
Turkish (287) 287
Romanian (245) 245
Hungarian (135) 135
Slovak (98) 98
Bulgarian (95) 95
Slovenian (93) 93
Serbian (77) 77
Indonesian (68) 68
Icelandic (47) 47
Croatian (36) 36
Arabic (32) 32
Estonian (19) 19
Greek (18) 18
Lithuanian (17) 17
Hebrew (11) 11
Latvian (8) 8
Bosnian (1) 1
Moldavian (1) 1
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