G04B 37/225 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

G04B 37/225

Full Title

Cases > Materials or processes of manufacturing pocket watch or wrist watch cases

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.