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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
G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
G04B31/012—Metallic bearings
G04B31/0123—Metallic bearings with metallic ball bearings and metallic roller bearings
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FR978245D1948-02-051948-12-27Dispositif de pivotement sur billes d'une masse oscillante pour remontage automatique de pièces d'horlogerie
ExpiredFR978245A
(fr)