DIFF Subgroup
H04J 1/12 Arrangements for reducing cross-talk between channels
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Frequency-division multiplex systems > Details > Arrangements for reducing cross-talk between channels
CPC:
Frequency-division multiplex systems (H04J14/00 takes precedence) > Details > Arrangements for reducing cross-talk between channels
No child classifications to compare. This is a leaf node in both IPC and CPC.