DIFF Subgroup
F02B 3/04 Methods of operating
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Engines characterised by air compression and subsequent fuel addition > with positive ignition > Methods of operating
CPC:
Engines characterised by air compression and subsequent fuel addition (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B11/00) > with positive ignition (with non-timed positive ignition F02B9/06) > Methods of operating
No child classifications to compare. This is a leaf node in both IPC and CPC.