Patents by Inventor Frederic V. Winkler

Frederic V. Winkler 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).

  • Snap-on hair stylist's tray
    Patent number: D244720
    Type: Grant
    Filed: February 27, 1974
    Date of Patent: June 14, 1977
    Inventor: Frederic V. Winkler
  • Hair dryer attachment
    Patent number: D260189
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: August 11, 1981
    Inventor: Frederic V. Winkler