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Application filed by Petignat MauricefiledCriticalPetignat Maurice
Publication of CH1382068A4publicationCriticalpatent/CH1382068A4/fr
G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
G04D3/06—Devices for shaping or setting watch glasses
G—PHYSICS
G04—HOROLOGY
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
G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
G04B39/004—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass
G04B39/006—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass out of wear resistant material, e.g. sapphire
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Physics & Mathematics
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General Physics & Mathematics
(AREA)
CH1382068D1968-09-161968-09-16Boîte de montre et procédé pour sa fabrication
CH1382068A4
(fr)