Patents by Inventor William J. Froelich

William J. Froelich 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: 6073375
    Abstract: A display panel advertising system includes two halves, each adapted to be placed on one side of a two-panel elevator access door. As the door panels slide together and the elevator door closes, the two display panels begin to form a picture which is not completed until the door is fully closed. The picture or scene develops as it advances from a hidden view when the door is fully open and as the two halves approach one another. This creates an attention getting device wherein the passengers in the elevator are captive and actually have a place to focus their attention rather than on the ceiling or floor number panel. The display panel advertising system is an effective means of attracting attention and promoting products and services to selected consumers.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: June 13, 2000
    Inventors: Patrick J. Fant, Dennis Sternitzsky, Kirsten A. Hayes, William J. Froelich