Patents by Inventor Rex P. Mitchell

Rex P. 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).

  • Apparatus for cleaning irrigation ditch
    Patent number: 5003712
    Abstract: A self-propelled irrigation ditch cleaner for use by a single operator which includes a side-oriented conveyor to transport debris up and out of the ditch for the later collection.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: April 2, 1991
    Inventor: Rex P. Mitchell