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Publication of CH325874A4publicationCriticalpatent/CH325874A4/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
G04B39/02—Sealing crystals or glasses
G04B39/025—Sealing crystals or glasses without special sealing parts
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
G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches
G04B37/113—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches without special hermetic sealing pieces
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