Patents by Inventor Robert D. MacDonald, Jr.

Robert D. MacDonald, Jr. 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).

  • Opaque sign plaque with dual reflector illumination
    Patent number: 4561203
    Abstract: An illuminated sign with an opaque sign plaque employs a light source overlying the sign plaque embraced by a concave downward facing reflector, and a flat lower reflector underlying the sign plaque, providing both direct and reflected illumination over the face of the sign plaque. In its preferred form, the concave reflector is compoundly curved over the ends of the sign plaque and the flat lower reflector is tilted toward the sign plaque.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: December 31, 1985
    Assignee: Dual-Lite Manufacturing
    Inventors: Robert D. MacDonald, Jr., William A. Luca, Robert M. Johnstone