DIFF Subgroup
G04C 21/36 Signal repeating devices
Introduced: September 1968
Title
Titles differ between systems:
IPC: Signal-repeating devices
CPC: Signal repeating devices
Full Title
Full titles differ between systems:
IPC:
Producing acoustic time signals by electrical means > producing the signals at adjustable fixed times > Signal-repeating devices
CPC:
Producing acoustic time signals by electrical means > producing the signals at adjustable fixed times > Signal repeating devices
No child classifications to compare. This is a leaf node in both IPC and CPC.