Patents by Inventor Kurt W. Wittke

Kurt W. Wittke 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).

  • Eyeglasses
    Patent number: D257437
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: October 21, 1980
    Inventors: Kurt W. Wittke, Addie L. Klotz
  • Eyeglasses
    Patent number: D257856
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: January 13, 1981
    Inventors: Kurt W. Wittke, Addie L. Klotz