DIFF Subgroup
H01F 7/02 Permanent magnets
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Magnets > Permanent magnets
CPC:
Magnets (superconducting magnets H01F6/00; for separation of solid materials or fluids B03C1/00; for bench or like work-holders B23B31/28, B23Q3/00; work-holding devices B25B11/00; lifting magnets B66C1/00; ; for electric meters G01R; for relays H01H; ; for dynamo-electric machines H02K) > Permanent magnets
CPC subdivides this area 4x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
Child Classifications
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