Patent classifications
G
PHYSICS
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G04
HOROLOGY
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G04B
MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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31/00
Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
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G04B31/004
characterised by the material used
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