having a toroidal shape

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Auxiliary devices > Phase-shifters > using a ferromagnetic device > having a toroidal shape

CPC:

Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Phase-shifters (H01P1/165 takes precedence) > using a ferromagnetic device > having a toroidal shape

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