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PCE
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DIFF Subgroup
H01P 1/215

using ferromagnetic material

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Auxiliary devices > Frequency-selective devices, e.g. filters > using ferromagnetic material

CPC:

Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Frequency-selective devices, e.g. filters > using ferromagnetic material

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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  • H01P 1/217 the ferromagnetic material acting as a tuning element in resonators since 1980 IPC+CPC Available in IPC and CPC
  • H01P 1/218 the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters since 1980 IPC+CPC Available in IPC and CPC