Patents by Inventor Dennis J. Von De Linde

Dennis J. Von De Linde 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).

  • Sign cabinet with box beam support frame and clamp assemblies
    Patent number: 4317302
    Abstract: This invention relates to on premise display sign cabinets having a main frame and a support frame formed by an extended box beam, the latter being rectangular in cross section, said support frame being disposed along the periphery of the main frame and being of sufficient structural strength to substantially reduce the need for support braces and carrying a plurality of individual slidable clamping assemblies in a raceway at one side of the beam to secure and maintain a polyvinyl chloride sign face under tension sufficient to withstand wind forces exceeding 50 pounds per square foot on the sign face.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: March 2, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Dennis J. Von De Linde