Patents by Inventor Robert A. T. Essell

Robert A. T. Essell 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).

  • Snowplow blade extension
    Patent number: RE31045
    Abstract: Snowplow blades can be immediately varied in length at one or both ends by providing extensions of the same shape as the blade, which extensions carry studs which are received in sockets, preferably lengthwise of the back of the blade. The studs are pinned in the sockets for quick and easy fastening and removal.
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: October 5, 1982
    Inventors: Albert E. Essell, deceased, by Virginia G. Essell, executrix, Robert A. T. Essell, Christopher W. Essell