Patents by Inventor Angelo Ley Choy

Angelo Ley Choy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Turn and tilt spectacles
    Patent number: 3990788
    Abstract: Lens holder supporting lens frames in spectacles are connected to a rotatable shaft mounted within a main supporting frame. Snap-on covers or braces are provided in the main supporting frame and have downwardly extending ribs forming a groove for the reception of the rotatable shaft. The snap-on covers or braces are spaced from each other to allow for the mounting of the lens holder in the main supporting frame, the main supporting frame being provided with a groove for allowing the lens holder to rotate with the shaft.
    Type: Grant
    Filed: September 26, 1975
    Date of Patent: November 9, 1976
    Inventor: Angelo Ley Choy