Patents by Inventor Kenneth L. Duppong

Kenneth L. Duppong 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).

  • Log splitter blade
    Patent number: D255686
    Type: Grant
    Filed: May 20, 1977
    Date of Patent: July 1, 1980
    Assignee: Speeco, Incorporated
    Inventors: Kenneth L. Duppong, Randall E. Toler