F02B 33/30 Control of inlet or outlet ports
Introduced: September 1968
Full Title
Full titles differ between systems:
Engines characterised by provision of pumps for charging or scavenging > Engines with reciprocating-piston pumps; Engines with crankcase pumps > Component parts, details, or accessories of crankcase pumps not provided for in, or of interest apart from, groups > Control of inlet or outlet ports
Engines characterised by provision of pumps for charging or scavenging > Engines with reciprocating-piston pumps; Engines with crankcase pumps > Component parts, details or accessories of crankcase pumps, not provided for in, or of interest apart from, subgroups F02B33/02 - F02B33/26 > Control of inlet or outlet ports
No child classifications to compare. This is a leaf node in both IPC and CPC.