Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
F01B 21/02

the machines or engines being all of reciprocating-piston type

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Combinations of two or more machines or engines > the machines or engines being all of reciprocating-piston type

CPC:

Combinations of two or more machines or engines (F01B23/00 takes precedence) > the machines or engines being all of reciprocating-piston type

No child classifications to compare. This is a leaf node in both IPC and CPC.