Patents by Inventor Robert R. Zuehlsdorff

Robert R. Zuehlsdorff 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).

  • Display system
    Patent number: 4784205
    Abstract: A kit for assembling a portable display system. The kit includes a plurality of H-shaped members which can be assembled one on top of the other, a flexible panel attachable to the assembled H-members and a tensioning device for tensioning the flexible panel.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: November 15, 1988
    Inventors: David B. Johnson, Fredrik A. Johnson, Robert R. Zuehlsdorff