Patents by Inventor Randall C. Knowles

Randall C. Knowles 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: D335944
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: June 1, 1993
    Inventor: Randall C. Knowles