DIFF Subgroup
C23G 1/08 Iron or steel
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Cleaning or pickling metallic material with solutions or molten salts > with acid solutions > Iron or steel
CPC:
Cleaning or pickling metallic material with solutions or molten salts (with organic solvents C23G5/02) > with acid solutions > Iron or steel
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
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