Patents by Inventor Jennings M. Ledbetter

Jennings M. Ledbetter 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).

  • Light box
    Patent number: 5386357
    Abstract: The invention relates to a light box including (a) a plurality of elongated L-shaped top sections abutted length-wise end-to-end, each of the top sections having a top flange substantially horizontally oriented and an integral back flange substantially vertically oriented; and (b) a plurality of bottom sections where the bottom sections are attached to the top sections; and (c) a single elongated translucent lens slidably secured between the outer edges of the top and bottom sections.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 31, 1995
    Assignee: Shell Oil Company
    Inventors: John F. Tryon, Jennings M. Ledbetter