Patents by Inventor Sidney F. Friedman

Sidney F. Friedman 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).

  • Clip for clip-on sunglasses
    Patent number: D350359
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: September 6, 1994
    Assignee: Opsales/Lenservice, Inc.
    Inventor: Sidney F. Friedman