IPC Subgroup
G04B 21/06 Details of striking mechanisms, e.g. hammer or fan governor
Introduced: September 1968
Last revised: January 2006
Full Title
Indicating the time by acoustic means > Regular striking mechanisms giving the full hour, half hour, or quarter hour > Details of striking mechanisms, e.g. hammer or fan governor
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