IPC Subgroup
G04B 23/02 Alarm clocks
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements producing acoustic signals at preselected times > Alarm clocks
Classification Context
- Section:
- PHYSICS
- Class:
- HOROLOGY
- Subclass:
- MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
6 direct subcodes
Child Classifications
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- G04B 23/03 Alarm signal stop arrangements
- G04B 23/04 with coarse and fine setting of the preselected time
- G04B 23/06 adjustable for several preselected times with automatic stopping of the signal
- G04B 23/08 operating on successive days without resetting; operating only once in each 24 hours
- G04B 23/1 with presignal; with repeated signal; with changeable intensity of sound
- G04B 23/12 Alarm watches to be worn in pockets or on the wrist