Patents by Inventor Fred L. Fifer, Jr.

Fred L. Fifer, Jr. 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).

  • Educational device
    Patent number: 5299806
    Abstract: An educational device having a chamber with a plurality of holes extending through the chamber. A plurality of ropes are selectively configured in the chamber and portions of the ropes are exposed outside the chamber. The ends of the exposed ropes are connected to knobs that allow a user to pull on a selected rope end thereby causing a movement of another rope end through another hole. The device encourages and permits a mental determination of the configuration of ropes within the chamber.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: April 5, 1994
    Assignee: Board of Regents, The University of Texas System
    Inventor: Fred L. Fifer, Jr.