DIFF Subgroup
B29C 59/10 by electric discharge treatment
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Surface shaping, e.g. embossing; Apparatus therefor > by electric discharge treatment
CPC:
Surface shaping , e.g. embossing; Apparatus therefor > by electric discharge treatment
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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