CPC Subgroup
H04J 3/04 Distributors combined with modulators or demodulators
Full Title
Time-division multiplex systems (H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q) > Details (electronic switching or gating H03K17/00) > Distributors combined with modulators or demodulators
3 direct subcodes
Child Classifications
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