Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of CH58175A4publicationCriticalpatent/CH58175A4/xx
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
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
G04B37/00—Cases
G04B37/08—Hermetic sealing of openings, joints, passages or slits
G04B37/081—Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown
G04B37/083—Complete encasings for wrist or pocket watches also comprising means for hermetic sealing of the winding stem and crown for shaped watches
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
