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Application filed by Grosjean Redard PaulfiledCriticalGrosjean Redard Paul
Publication of CH6454ApublicationCriticalpatent/CH6454A/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
G04B37/08—Hermetic sealing of openings, joints, passages or slits
G04B37/087—Protection of wrist or pocket watch cases against dust
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Physics & Mathematics
(AREA)
General Physics & Mathematics
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CH6454A1893-04-261893-04-26Montre système Roskopf perfectionnée avec boîte sans carrure et avec pendant fixé sur un bloc adapté à la platine
CH6454A
(fr)