DIFF Subgroup
C23F 1/02 Local etching
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Etching metallic material by chemical means > Local etching
CPC:
Etching metallic material by chemical means (manufacture of printing surfaces B41C; manufacture of printed circuits H05K) > Local etching
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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