DIFF Subgroup
H01F 29/08 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Variable transformers or inductances not covered by group > with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
CPC:
Variable transformers or inductances not covered by group H01F21/00 > with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- H01F 29/12 having movable coil, winding, or part thereof; having movable shield IPC+CPC Available in IPC and CPC