DIFF Main Group
H01F 13/00 Apparatus or processes for magnetising or demagnetising ( ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; ; demagnetising arrangements for colour television H04N9/29)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Apparatus or processes for magnetising or demagnetising
CPC: Apparatus or processes for magnetising or demagnetising ( ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; ; demagnetising arrangements for colour television H04N9/29)
Full Title
Full titles differ between systems:
IPC:
Apparatus or processes for magnetising or demagnetising
CPC:
Apparatus or processes for magnetising or demagnetising ( ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; ; demagnetising arrangements for colour television H04N9/29)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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