Patents by Inventor John O. Cramer

John O. Cramer 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).

  • Patent number: 4804187
    Abstract: A puzzle or game including a set of pieces combinable to form a rectangular array and a retainer for holding said pieces in a tubular or circular form dimensioned in accordance with the Phi factor, (.phi.). The set of pieces is divided into three subsets of different colors to be combined in rows of equal length in which no piece of any given subset abuts any other piece of the same subset end-to-end or side-to-side. The pieces carry indicia also to be combined in the array in distinctive fashion related to .phi..
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: February 14, 1989
    Inventor: John O. Cramer