Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiromasa Sato0
Date of Patent
November 14, 2006
Patent Application Number
10685527
Date Filed
October 16, 2003
Patent Citations Received
Patent Primary Examiner
Patent abstract
Here is disclosed a face mask provided with a rotation angle regulating means for stepwise variation of an angle of each buckle relative to associated lens frame side wall. A buckle is rotatably attached to the lens frame side wall of the face mask and the lens frame side wall and the buckle are formed with the rotation angle regulating means comprising one or more protrusions and depressions adapted to be releasably brought into mutual engagement.
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