Patents by Inventor David T. Sheldon

David T. Sheldon 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).

  • Trailer-type floating snow plow
    Patent number: 6070343
    Abstract: An adjustable grading device attaching to a vehicle rear towing hitch having a grading blade for grading or snow removal and integrated wheels for transport.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: June 6, 2000
    Inventor: David T. Sheldon