Patents by Inventor Raymond Schoolden

Raymond Schoolden 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).

  • Mobile chair for paraplegics
    Patent number: 3937519
    Abstract: The present wheel chair has a hydraulic jack for raising and lowering a seat. The frame of the chair has spaced opposite sides and a jack-supporting horizontal platform at the bottom. At the back, the frame of the chair is open above this platform so that the user enters and leaves the chair (getting on and off the seat) from the back.
    Type: Grant
    Filed: March 25, 1974
    Date of Patent: February 10, 1976
    Inventor: Raymond Schoolden