DIFF Subgroup
C22B 21/06 refining
Introduced: September 1968
Title
Titles differ between systems:
IPC: Refining
CPC: refining
Full Title
Full titles differ between systems:
IPC:
Obtaining aluminium > Refining
CPC:
Obtaining aluminium > refining
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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