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IPC Subgroup
H01P 1/218

the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters

Introduced: January 1980

Last revised: January 2006

Full Title

Auxiliary devices > Frequency-selective devices, e.g. filters > using ferromagnetic material > the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE