Patents by Inventor Mark J. Appelberg

Mark J. Appelberg 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).

  • Illuminated roof mounted sign assembly for motor vehicle
    Patent number: 6056425
    Abstract: An illuminated teardrop shaped sign mounted on the roof of a taxicab carries at least one transparency backlighted by an electroluminescent panel. Two separately backlighted transparencies may be employed, one for displaying an advertising message and the other carrying an emergency message to enable the cab driver to alert police if a criminal act is taking place in the cab.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: May 2, 2000
    Assignee: E-Lite Technologies, Inc.
    Inventor: Mark J. Appelberg