DIFF Main Group
H04J 4/00 Combined time-division and frequency-division multiplex systems (H04J13/00 takes precedence )
Introduced: July 1974
Title
Titles differ between systems:
IPC: Combined time-division and frequency-division multiplex systems
CPC: Combined time-division and frequency-division multiplex systems (H04J13/00 takes precedence )
Full Title
Full titles differ between systems:
IPC:
Combined time-division and frequency-division multiplex systems
CPC:
Combined time-division and frequency-division multiplex systems (H04J13/00 takes precedence )
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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