Patents by Inventor Geoffrey L. Guenther

Geoffrey L. Guenther 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).

  • Three dimensional puzzle
    Patent number: 4534563
    Abstract: A three dimensional puzzle game having a plurality of component pieces, which when assembled, form a plurality of different right rectangular prism solution shapes. The pieces are designed to give a puzzle unit volume which is a multiple of at least four prime numbers, not all equal to each other. All of the component pieces are utilized to provide each of the solution shapes. Preferably, the component pieces are multi-layered and made from rectangular cross-section material, such as wood, of uniform width.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: August 13, 1985
    Inventor: Geoffrey L. Guenther
  • Puzzle
    Patent number: D585501
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: January 27, 2009
    Inventor: Geoffrey L. Guenther