IPC Main Group
G04B 19/00 Indicating the time by visual means
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
Related Keywords
CALENDAR(S) clocks or watchesDATE indicators
10 direct subcodes
Child Classifications
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- G04B 19/02 Back-gearing arrangements between gear train and hands
- G04B 19/04 Hands; Discs with a single mark or the like
- G04B 19/06 Dials
- G04B 19/2 Indicating by numbered bands, drums, discs, or sheets
- G04B 19/22 Arrangements for indicating different local apparent times; Universal time-pieces
- G04B 19/24 Clocks or watches with date indicators; Clockwork calendars
- G04B 19/26 Clocks or watches with indicators for tides, for the phases of the moon, or the like
- G04B 19/28 Adjustable guide marks or pointers for indicating determined points of time
- G04B 19/3 Illumination of dials or hands
- G04B 19/34 Position of the hands projected optically