DIFF Subgroup
H01F 17/04 with magnetic core
Introduced: September 1968
Full Title
Fixed inductances of the signal type > with magnetic core
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
Child Classifications
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- H01F 17/06 with core substantially closed in itself, e.g. toroid +3 CPC IPC+CPC Available in IPC and CPC