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chemistry (436301) 436301
metallurgy (432619) 432619
metallurgy of iron (355181) 355181
general devices for heat treatment of ferrous or non-ferrousmetals or alloys (353393) 353393
making metal malleable by decarburisation, tempering or othertreatments (353393) 353393
modifying the physical structure of ferrous metals (353393) 353393
performing operations (210426) 210426
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ferrous or non-ferrous alloys (162354) 162354
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heating (104989) 104989
weapons (104882) 104882
lighting (104831) 104831
blasting (104808) 104808
general tagging of cross-sectional technologies spanning over several sections of the ipc (100420) 100420
general tagging of new technological developments (100420) 100420
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (100420) 100420
electricity (87808) 87808
chemical surface treatment (76844) 76844
coating by vacuum evaporation, by sputtering, by ion implantationor by chemical vapour deposition, in general (76843) 76843
coating material with metallic material (76843) 76843
coating metallic material (76843) 76843
diffusion treatment of metallic material (76843) 76843
inhibiting corrosion of metallic material or incrustation ingeneral (76843) 76843
basic electric elements (72374) 72374
coating by vacuum evaporation, by sputtering, by ionimplantation or by chemical vapour deposition, in general (69652) 69652
surface treatment of metallic material by diffusion into thesurface, by chemical conversion or substitution (69652) 69652
mechanical metal-working without essentially removingmaterial (62477) 62477
punching metal (62477) 62477
technologies or applications for mitigation or adaptation againstclimate change (59779) 59779
working of plastics (47652) 47652
working of substances in a plastic state, in general (47652) 47652
after-treatment of the shaped products, e.g. repairing (46427) 46427
shaping of material in a plastic state, not otherwise providedfor (46427) 46427
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welding (36345) 36345
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details or accessories of furnaces, kilns, ovens, or retorts,in so far as they are of kinds occurring in more than one kindof furnace (22100) 22100
furnaces, kilns, ovens, or retorts in general (21982) 21982
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physical or chemical processes or apparatus in general (21536) 21536
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selection of materials for their magnetic properties (21051) 21051
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casting of metals (18004) 18004
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handling thin or filamentary material (17902) 17902
storing (17902) 17902
changing the physical structure of non-ferrous metals andnon-ferrous alloys (16896) 16896
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (15540) 15540
electric heating (14840) 14840
electric lighting not otherwise provided for (14834) 14834
separation (14786) 14786
hygiene (14727) 14727
medical or veterinary science (14712) 14712
compositions based thereon (14334) 14334
organic macromolecular compounds (14334) 14334
their preparation or chemical working-up (14334) 14334
heat exchange in general (13952) 13952
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (13513) 13513
working or processing of sheet metal or metal tubes, rods orprofiles without essentially removing material (13331) 13331
indexing scheme associated with subclass b29c, relating to particulararticles (12984) 12984
combined heating and refrigeration systems (12849) 12849
heat pump systems (12849) 12849
liquefaction solidification of gases (12849) 12849
manufacture or storage of ice (12849) 12849
refrigeration or cooling (12849) 12849
apparatus therefor (12464) 12464
foods or foodstuffs (12087) 12087
their treatment, not covered by other classes (12087) 12087
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Engineering & Comp. Sci. - Stacks (48) 48
Collection Dvlpm't (Acquisitions) - Vendor file (27) 27
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