Patents by Inventor Donald E. Joupperi

Donald E. Joupperi 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).

  • Endless track loader vehicle
    Patent number: D251845
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: May 15, 1979
    Assignee: Caterpillar Tractor Co.
    Inventors: Donald E. Joupperi, James A. Berkel, Jr., Robert F. Shankwitz