IPC Subgroup
H01P 1/18 Phase-shifters
Introduced: September 1968
Last revised: January 2006
Full Title
Auxiliary devices > Phase-shifters
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE
Related Keywords
PHASE(S) shifters in waveguides
2 direct subcodes
Child Classifications
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- H01P 1/185 using a diode or a gas filled discharge tube
- H01P 1/19 using a ferromagnetic device