DIFF Subgroup
H04J 3/14 Monitoring arrangements
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Time-division multiplex systems > Details > Monitoring arrangements
CPC:
Time-division multiplex systems (H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q) > Details (electronic switching or gating H03K17/00) > Monitoring arrangements
No child classifications to compare. This is a leaf node in both IPC and CPC.