F22B 37/221 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

F22B 37/221

Full Title

Component parts or details of steam boilers > applicable to more than one kind or type of steam boiler > Drums; Headers; Accessories therefor

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.