DIFF Subgroup
H01P 1/19 using a ferromagnetic device
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Auxiliary devices > Phase-shifters > using a ferromagnetic device
CPC:
Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Phase-shifters (H01P1/165 takes precedence) > using a ferromagnetic device
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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