Patents by Inventor James M. Extine

James M. Extine 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).

  • Leveling unit for parked vehicles
    Patent number: 4108421
    Abstract: A leveling unit for parked vehicles -- such as house trailers or mobile homes or recreational vehicles -- which includes a horizontal stand having a manual vertically adjustable wheel support ramp with a wheel engaging surface and ground engaging means under the stand. A level or plumb line on the vehicle indicates which of its side needs leveling and the unit is placed under the tire on the low side by driving the wheel of the vehicle up the ramp.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: August 22, 1978
    Assignee: The Raymond Lee Organization, Inc.
    Inventor: James M. Extine