DIFF Subgroup
C25D 21/12 Process control or regulation (controlling or regulating in general G05)
Introduced: July 1974
Title
Titles differ between systems:
IPC: Process control or regulation
CPC: Process control or regulation (controlling or regulating in general G05)
Full Title
Full titles differ between systems:
IPC:
Processes for servicing or operating cells for electrolytic coating > Process control or regulation
CPC:
Processes for servicing or operating cells for electrolytic coating > Process control or regulation (controlling or regulating in general G05)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1974.
Child Classifications
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- C25D 21/14 Controlled addition of electrolyte components since 1974 IPC+CPC Available in IPC and CPC