DIFF Subgroup
C22C 1/02 by melting
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making non-ferrous alloys > by melting
CPC:
Making non-ferrous alloys (by electrothermic methods C22B4/00; by electrolysis C25C1/24, C25C3/36) > by melting
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1974.
Child Classifications
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