F01L 2013/10 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup Additional Only

F01L 2013/10

Full Title

Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations

Of 5 combined children, 0 exist in both systems.

5 codes are CPC-only extensions.

Note: 5 CPC extensions are marked as secondary classification only.

This code exists only in CPC.

Diff view requires codes present in both systems.