CPC Subgroup
H03F 3/60 Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators (H03F3/54 takes precedence)
Full Title
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements > Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators (H03F3/54 takes precedence)
4 direct subcodes
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