Patents by Inventor Keith R. Ewing

Keith R. Ewing 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).

  • Therapeutic footrest
    Patent number: 4086921
    Abstract: Therapeutic footrest has an upholstered rest cushion which is angularly adjustable by electric remote control, is heated to a remotely controllable temperature, and is vibratable at a frequency which is remotely controllable. An upholstered panel can be raised at the back of the cushion so that the footrest may be used as a seat.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: May 2, 1978
    Inventors: David Gonzales, Keith R. Ewing