DIFF Subgroup
H04J 3/20 using resonant transfer
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Time-division multiplex systems > using resonant transfer
CPC:
Time-division multiplex systems (H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q) > using resonant transfer
No child classifications to compare. This is a leaf node in both IPC and CPC.