Patents by Inventor William E. Muehlenhard

William E. Muehlenhard 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).

  • Collapsible zoetrope
    Patent number: 6097468
    Abstract: A collapsible zoetrope having a base and a side wall. The zoetrope is held erect by hinged junctures and mutually engageable tabs and slots between the base and the side wall.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: August 1, 2000
    Inventor: William E. Muehlenhard