Patents by Inventor Loren M. Johnston

Loren M. Johnston 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).

  • Mobility aid ramp
    Patent number: 5634228
    Abstract: A mobility aid ramp comprised of an elongated middle ramp comprising a first section and a second section, a pair of elongated outer ramps comprised a first section and a second section, and a plurality of flat rods pivotally coupling the pair of elongated outer ramps on opposing sides of the elongated middle ramp.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: June 3, 1997
    Inventor: Loren M. Johnston