Patents by Inventor Douglas L. Dykstra

Douglas L. Dykstra 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).

  • Flashing light ball
    Patent number: 5066011
    Abstract: A bouncing ball within which is incorporated an activatable light in the form of a flashtube which flashes when the ball incurs a physical jolting force such as when it is being bounced. There may also be incorporated within the ball a sound annunciator which produces a sound simultaneously with the flashing of the light.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: November 19, 1991
    Inventors: Douglas L. Dykstra, Steven L. Herbruck