Patents by Inventor LeRoy B. Donovan

LeRoy B. Donovan 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).

  • Spectacles and kit for making same
    Patent number: 4165925
    Abstract: Narrow edged widely spaced gripping ridges molded in thin flexible plastic sheets are easily and permanently applied by pressure adhesive to smooth spectacle frame gripping faces which normally directly engage nose bridge and temporal head areas thereby retaining spectacles in place during violent exercise.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: August 28, 1979
    Inventor: LeRoy B. Donovan