Patents by Inventor Charles A. Karn

Charles A. Karn 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: D313692
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: January 15, 1991
    Assignee: Ckarn Design
    Inventor: Charles A. Karn