IPC Subgroup
G04B 17/06 Oscillators with hairsprings, e.g. balance
Introduced: September 1968
Last revised: January 2006
Full Title
Mechanisms for stabilising frequency > Oscillators acting by spring tension > Oscillators with hairsprings, e.g. balance
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