Patents by Inventor Dennis E. Sumpter

Dennis E. Sumpter 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).

  • Cap
    Patent number: D289223
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: April 14, 1987
    Inventors: Dennis E. Sumpter, Marion L. Berry