H01F 13/003 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

H01F 13/003

Full Title

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)

This code exists only in CPC.

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