DIFF Subgroup
G04B 25/04 Alarm clocks or watches with devices stimulating the skin
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Indicating the time by other means or by combined means > by feeling; Clocks or watches for blind persons > Alarm clocks or watches with devices stimulating the skin
CPC:
Indicating the time by other means or by combined means (electric or electromechanical indicating G04C ) > by feeling; Clocks or watches for blind persons > Alarm clocks or watches with devices stimulating the skin
No child classifications to compare. This is a leaf node in both IPC and CPC.