CPC Subgroup
H01P 1/213 combining or separating two or more different frequencies (H01P1/215 takes precedence)
Full Title
Auxiliary devices (coupling devices of the waveguide type H01P5/00) > Frequency-selective devices, e.g. filters > combining or separating two or more different frequencies (H01P1/215 takes precedence)
5 direct subcodes
Child Classifications
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