Patents by Inventor Philip D. Stark

Philip D. Stark 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).

  • Agricultural tiller
    Patent number: D269784
    Type: Grant
    Filed: September 17, 1980
    Date of Patent: July 19, 1983
    Assignee: Roper Corporation
    Inventor: Philip D. Stark