Patents by Inventor Robert S. Lipscomb

Robert S. Lipscomb 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).

  • Changeable sign assembly
    Patent number: 4884352
    Abstract: A changeable sign assembly comprises a base, at least two retaining members attached to the base having walls defining opposing longitudinal grooves, and plurality of display members having curved opposite edge portions formed of a thin resilient material, the edge portions being flexibly deformed by the longitudinal grooves in the retaining members such that the display members are removably retained by the retaining members.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: December 5, 1989
    Inventor: Robert S. Lipscomb