Patents by Inventor William J. Hoop

William J. Hoop 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).

  • Advertisement pillar
    Patent number: 4118082
    Abstract: An advertisement pillar for use on public streets, squares or in buildings for displaying advertising cards which can be dispensed in blank form and thereafter reinserted into the device for subsequent display. The pillar is comprised of an outer transparent housing in which a revolving display unit is positioned. The advertising cards are removably attached to mounting panels which can, if desired, be transparent and provided with a rear light source.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: October 3, 1978
    Assignee: Gamperdona Handels- und Finanz Aktiengesellschaft
    Inventor: William J. Hoop