Patents by Inventor Ian A. Mitchell

Ian A. Mitchell 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).

  • Tool which uses soil as wearing edge
    Patent number: 4911249
    Abstract: A soil-working tine has a recess extending along its wearing edge. The recess captures some soil as the tine passes through the soil. The soil captured in the recess acts as a wearing edge, reducing wear on the material of the tine.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: March 27, 1990
    Assignee: Ticonderoga Pty. Ltd.
    Inventor: Ian A. Mitchell