DIFF Subgroup
G01R 23/07 using response of circuits tuned on resonance, e.g. grid-drip meter
Introduced: July 1974
Full Title
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra > Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage > by converting frequency into an amplitude of current or voltage > using response of circuits tuned on resonance, e.g. grid-drip meter
No child classifications to compare. This is a leaf node in both IPC and CPC.