Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01B
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
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3/00
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
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F01B3/0032
having rotary cylinder block
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F01B3/0035
having two or more sets of cylinders or pistons
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F01B3/0038
inclined to main shaft axis
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