Patents by Inventor John R. Spurgeon

John R. Spurgeon 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).

  • Electronic display apparatus
    Patent number: 4298868
    Abstract: An apparatus is provided to produce an optical illusion of variable geometric patterns. The apparatus may be used as an electronic toy, display or kinetic art mural, as well as a demonstration aid in geometry, physics or physiology. An array of light emitting diodes mounted on a rotating disk or carrier is selectively activated to control the geometric patterns formed.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: November 3, 1981
    Inventor: John R. Spurgeon