DIFF Subgroup
C22F 1/16 of other metals or alloys based thereon
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working > of other metals or alloys based thereon
CPC:
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24) > of other metals or alloys based thereon
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- C22F 1/18 High-melting or refractory metals or alloys based thereon +2 CPC IPC+CPC Available in IPC and CPC