CPC Subgroup
H01P 1/181 Full Title
Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Phase-shifters (H01P1/165 takes precedence)
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H01P 1/181 Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Phase-shifters (H01P1/165 takes precedence)