DIFF Subgroup Additional Only
F01B 2009/061 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 > the piston motion being transmitted by curved surfaces
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.