Patents by Inventor Nathan D. Grenell

Nathan D. Grenell 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).

  • Game and amusement device
    Patent number: 4154444
    Abstract: What is disclosed is a novel game which depends on both memory and skill. The game consists of a spinner apparatus for determining play and a series of perforated, patterned discs and colored pegs which gives both a chance selection and chance peg insertion which gives the game ever-changing characteristics.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: May 15, 1979
    Assignee: Robert L. McKellar
    Inventor: Nathan D. Grenell