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performing operations (31) 31
transporting (31) 31
fixed constructions (22) 22
chemistry (21) 21
metallurgy (21) 21
physics (15) 15
dredging (14) 14
foundations (14) 14
hydraulic engineering (14) 14
soil shifting (14) 14
soil-shifting (14) 14
measuring (9) 9
testing (9) 9
earth drilling (7) 7
ferrous or non-ferrous alloys (7) 7
mining (7) 7
treatment of alloys or non-ferrous metals (7) 7
human necessities (6) 6
blasting (5) 5
casting (5) 5
controlling (5) 5
galleries (5) 5
heating (5) 5
large underground chambers (5) 5
lighting (5) 5
machine tools (5) 5
mechanical engineering (5) 5
metal-working not otherwise provided for (5) 5
physical or chemical processes or apparatus in general (5) 5
powder metallurgy (5) 5
regulating (5) 5
shafts (5) 5
tunnels (5) 5
weapons (5) 5
electricity (4) 4
foods or foodstuffs (4) 4
land vehicles for travelling otherwise than on rails (4) 4
mechanical metal-working without essentially removingmaterial (4) 4
motor vehicles (4) 4
pretreatment of raw materials (4) 4
production and refining of metals (4) 4
punching metal (4) 4
separation (4) 4
their treatment, not covered by other classes (4) 4
trailers (4) 4
alloys (3) 3
casting of metals (3) 3
casting of other substances by the same processes or devices (3) 3
fuels (3) 3
indexing scheme associated with subclass c10m relating to lubricatingcompositions (3) 3
inorganic chemistry (3) 3
investigating or analysing materials by determining theirchemical or physical properties (3) 3
lubricants (3) 3
lubricating compositions (3) 3
peat (3) 3
petroleum, gas or coke industries (3) 3
presses (3) 3
presses in general (3) 3
systems for controlling or regulating non-electric variables (3) 3
technical gases containing carbon monoxide (3) 3
use of chemical substances either alone or as lubricatingingredients in a lubricating composition (3) 3
vehicles adapted for load transportation or to transport, tocarry, or to comprise special loads or objects (3) 3
vehicles in general (3) 3
after-treatment not covered by subclasses c08b, c08c, c08f,c08g (2) 2
basic electronic circuitry (2) 2
beer (2) 2
biochemistry (2) 2
climate change mitigation technologies in the production orprocessing of goods (2) 2
combinations or associations of metal-working machines, notdirected to a particular result (2) 2
compositions based thereon (2) 2
compositions of macromolecular compounds (2) 2
compounds thereof (2) 2
control or regulating systems in general (2) 2
conveying (2) 2
crushing, pulverising, or disintegrating (2) 2
crushing, pulverising, or disintegrating in general (2) 2
details of heat-exchange and heat-transfer apparatus, ofgeneral application (2) 2
details, components, or accessories for machine tools, e.g.arrangements for copying or controlling (2) 2
enzymology (2) 2
forge furnaces (2) 2
forging (2) 2
functional elements of such systems (2) 2
furnaces (2) 2
furnaces, kilns, ovens, or retorts in general (2) 2
general processes of compounding (2) 2
general tagging of cross-sectional technologies spanning over several sections of the ipc (2) 2
general tagging of new technological developments (2) 2
hammering (2) 2
handling thin or filamentary material (2) 2
heat exchange in general (2) 2
kilns (2) 2
machine tools in general characterised by the construction ofparticular details or components (2) 2
manufacture of iron or steel (2) 2
measuring electric variables (2) 2
measuring magnetic variables (2) 2
metallurgy of iron (2) 2
microbiology (2) 2
milling grain (2) 2
monitoring or testing arrangements for such systems orelements (2) 2
mutation or genetic engineering (2) 2
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