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Application filed by Louis GuillotfiledCriticalLouis Guillot
Publication of CH75255ApublicationCriticalpatent/CH75255A/fr
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
G04B37/00—Cases
G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
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Physics & Mathematics
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General Physics & Mathematics
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CH75255A1917-01-171917-01-17Procédé pour préparer des coquilles, particulièrement des boîtes de montres, en deux métaux appliqués l'un sur l'autre
CH75255A
(fr)