CPC Subgroup
G05B 1/02 for comparing analogue signals (circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00)
Full Title
Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values > electric > for comparing analogue signals (circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00)
3 direct subcodes
Child Classifications
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