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fixed constructions (20) 20
performing operations (18) 18
transporting (18) 18
earth drilling (14) 14
mining (14) 14
earth drilling, e.g. deep drilling (8) 8
obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (8) 8
blasting (7) 7
heating (7) 7
lighting (7) 7
mechanical engineering (7) 7
weapons (7) 7
human necessities (6) 6
dredging (5) 5
foundations (5) 5
hydraulic engineering (5) 5
physics (5) 5
soil shifting (5) 5
soil-shifting (5) 5
agriculture (4) 4
animal husbandry (4) 4
chemistry (4) 4
fishing (4) 4
forestry (4) 4
hunting (4) 4
machine tools (4) 4
mechanical metal-working without essentially removingmaterial (4) 4
metal-working not otherwise provided for (4) 4
metallurgy (4) 4
mining or quarrying (4) 4
punching metal (4) 4
trapping (4) 4
actuating-floats (3) 3
air-conditioning, air-humidification, ventilation, use of aircurrents for screening (3) 3
cocks (3) 3
combinations or associations of metal-working machines, notdirected to a particular result (3) 3
details, components, or accessories for machine tools, e.g.arrangements for copying or controlling (3) 3
devices for venting or aerating (3) 3
engineering elements and units (3) 3
general measures for producing and maintaining effectivefunctioning of machines or installations (3) 3
machine tools in general characterised by the construction ofparticular details or components (3) 3
magnetic or electrostatic separation of solid materials from solidmaterials or fluids (3) 3
making particular metal objects by rolling, e.g. screws,wheels, rings, barrels, balls (3) 3
ranges (3) 3
separation by high-voltage electric fields (3) 3
separation of solid materials using liquids or using pneumatictables or jigs (3) 3
taps (3) 3
thermal insulation in general (3) 3
valves (3) 3
ventilating (3) 3
adhesive processes not provided for elsewhere (2) 2
adhesives (2) 2
apparatus using free vortex flow, e.g. cyclones (2) 2
calculating (2) 2
centrifugal apparatus or machines for carrying-out physical orchemical processes (2) 2
computing (2) 2
counting (2) 2
details of heat-exchange and heat-transfer apparatus, ofgeneral application (2) 2
dyes (2) 2
electricity (2) 2
galleries (2) 2
hauling (2) 2
heat exchange in general (2) 2
hoisting (2) 2
large underground chambers (2) 2
lifting (2) 2
miscellaneous applications of materials (2) 2
miscellaneous compositions (2) 2
natural resins (2) 2
non-mechanical aspects of adhesive processes in general (2) 2
paints (2) 2
parts, details, or accessories of agricultural machines orimplements, in general (2) 2
physical or chemical processes or apparatus in general (2) 2
polishes (2) 2
rolling of metal (2) 2
separating solid materials using liquids or using pneumatictables or jigs (2) 2
separation (2) 2
shafts (2) 2
soil working in agriculture or forestry (2) 2
tunnels (2) 2
use of materials as adhesives (2) 2
advertising (1) 1
after-treatment not covered by subclasses c08b, c08c, c08f,c08g (1) 1
apparatus therefor (1) 1
appliances for teaching, or communicating with, the blind,deaf or mute (1) 1
arrangement or mounting of plural diverse prime-movers invehicles (1) 1
arrangement or mounting of propulsion units or oftransmissions in vehicles (1) 1
arrangements in connection with cooling, air intake, gasexhaust or fuel supply of propulsion units, in vehicles (1) 1
auxiliary drives for vehicles (1) 1
basic electronic circuitry (1) 1
boring (1) 1
butchering (1) 1
capstans (1) 1
chemical treatment of hides, skins or leather, e.g. tanning,impregnating, finishing (1) 1
cleaning (1) 1
cleaning in general (1) 1
code conversion in general (1) 1
coding (1) 1
combined heating and refrigeration systems (1) 1
compositions based thereon (1) 1
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