F01B 3/0002 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

F01B 3/0002

Full Title

Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.