IPC Subgroup
G04B 31/004 characterised by the material used
Introduced: January 1980
Last revised: January 2006
Full Title
Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor > characterised by the material used
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
3 direct subcodes
Child Classifications
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- G04B 31/008 Jewel bearings
- G04B 31/012 Metallic bearings
- G04B 31/016 Plastic bearings