Patents by Inventor Roger D. Crawford

Roger D. Crawford 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).

  • Patent number: 6042243
    Abstract: A modular light box comprises a rectangular frame defining an enclosure and a front rectangular opening. The frame is formed of a pair of side panels, a bottom panel and a top panel, each of which is provided with a substantially flat, rectangular outer surface and an electrical wiring port extending from within the enclosure out through an opening in the outer surface of the panel. A translucent display panel bearing one or more decorative or informational images is mounted within the opening defined by the frame. Another such display panel may optionally mounted in the rear opening in the frame. One or more lamps are mounted within the enclosure to provide backlighting for the front, and optionally the rear, display panel. In a preferred embodiment of the invention, one or more of the panels forming the frame of the modular light box is constructed with a rectangular core of foamed plastic having a rigid support frame about its periphery and a plastic layer adhered to each of the major surfaces thereof.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: March 28, 2000
    Assignee: Exhibit & Display Center, Inc.
    Inventors: James L. Grill, Roger D. Crawford, Alfred G. Recknagel, Nicholas W. Hartzell, George B. Decker