IPC Subgroup
H01F 21/12 discontinuously variable, e.g. tapped
Introduced: September 1968
Last revised: January 2006
Full Title
Variable inductances or transformers of the signal type > discontinuously variable, e.g. tapped
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES