IPC Subgroup
G04G 13/02 at preselected times, e.g. alarm clocks
Introduced: January 1980
Last revised: January 2006
Full Title
Producing acoustic time signals > at preselected times, e.g. alarm clocks
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- ELECTRONIC TIME-PIECES