Patents by Inventor Keith L. Killingsworth

Keith L. Killingsworth 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).

  • Patent number: D253638
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: December 11, 1979
    Inventor: Keith L. Killingsworth