Patents by Inventor John Veltman

John Veltman 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).

  • Display polyhedra having marked and unmarked paired opposing faces
    Patent number: 5385473
    Abstract: A polyhedra for emulating an object or other phenomena with marked surfaces, includes a plurality of faces, some with markings and some being blank. The surfaces are arranged about the polyhedra so that each marked face is opposite a blank face. The polyhedra may be used for conducting and/or demonstrating the principles of probability in conjunction with a projection device.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: January 31, 1995
    Assignee: Cuisenaire Company of America, Inc.
    Inventor: John Veltman