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DIFF Subgroup
H01P 1/217

the ferromagnetic material acting as a tuning element in resonators

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Auxiliary devices > Frequency-selective devices, e.g. filters > using ferromagnetic material > the ferromagnetic material acting as a tuning element in resonators

CPC:

Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Frequency-selective devices, e.g. filters > using ferromagnetic material > the ferromagnetic material acting as a tuning element in resonators

No child classifications to compare. This is a leaf node in both IPC and CPC.