Patents by Inventor Kathleen M. Zimmer

Kathleen M. Zimmer 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).

  • Changeable book structure
    Patent number: 4946414
    Abstract: A changeable book structure in which several panels are joined side-by-side by an elastic hinge to form a book. The elastic hinge may be separated from the panels. Each of the panels has color-coded slots, and certain of the panels also have color-coded tabs receivable in the slots so that the panels may be connected together to form a self-supporting structure, such as a playhouse.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: August 7, 1990
    Inventor: Kathleen M. Zimmer