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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Main Group
H04J 7/00

Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels

Introduced: September 1968

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • H04J 7/02 in which the polarity of the amplitude is characteristic IPC+CPC Available in IPC and CPC