Patents by Inventor Mark Daniel Dennis

Mark Daniel Dennis 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: 6704989
    Abstract: A transportable electronic sign display system and process where electronic display modules are encased in castered protective cases which are broken down on site and assembled in rows of desired length and stackably elevated and maneuvered by a lifting truss. Electronic display modules are lifted from protective case bases with minimal effort or labor. Various numbers of rows of desired length of electronic display modules can be stacked to form a desired display size.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: March 16, 2004
    Assignee: Daktronics, Inc.
    Inventors: Robert James Lutz, Bradley Jon VanderTuin, Mark Daniel Dennis