IPC Main Group
G04B 9/00 Supervision of the state of winding, e.g. indicating the amount of winding
Introduced: September 1968
Last revised: January 2006
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
1 direct subcode
Child Classifications
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- G04B 9/02 Devices controlled by such state, e.g. device affording protection against overwinding