Patents by Inventor Mervin R. Williams

Mervin R. Williams 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).

  • Illuminated hula hoop
    Patent number: 4006556
    Abstract: A hula hoop type toy is provided with a plurality of aesthetically configured openings disposed therearound. Light emitting means, such as light bulbs, provided in an electrical circuit are associated with the openings. The electrical circuit is powered by a battery and closed by a centrifugal switch and is disposed in the interior of the hoop.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: February 8, 1977
    Inventor: Mervin R. Williams