CPC Subgroup
F01B 9/047 Full Title
Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 > with rotary main shaft other than crankshaft
F01B 9/047 Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 > with rotary main shaft other than crankshaft