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More topics under "F01 - Machines or engines in general; Engine plants in general; Steam engines" (397,745) |
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F01B - Machines or engines, in general or of positive-displacement type, e.g. steam engines (14,761) | F01C - Rotary-piston or oscillating-piston machines or engines (21,746) | F01D - Non-positive-displacement machines or engines, e.g. steam turbines (97,577) | F01K - Steam engine plants; Steam accumulators; Engine plants not otherwise provided for; Engines using special working fluids or cycles (26,834) | F01L - Cyclically operating valves for machines or engines (55,769) | F01M - Lubricating of machines or engines in general; Lubricating internal-combustion engines; Crankcase ventilating (32,134) | F01N - Gas-flow silencers or exhaust apparatus for machines or engines in general; Gas-flow silencers or exhaust apparatus for internal-combustion engines (113,559) | F01P - Cooling of machines or engines in general; Cooling of internal-combustion engines (35,365) |
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