Patents by Inventor David L. W. Wong

David L. W. Wong 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: 4802675
    Abstract: A game comprising a toy gun and an electronic target which registers hits produced by the gun. The gun comprises an electronic flash tube connected to a circuit to produce a high voltage unidirectional supply from a low voltage supply. When the gun trigger is depressed, the flash tube is fired and the resulting light is concentrated to produce a relatively narrow beam of light. As well, an audio signal is produced for each press of the trigger. If the beam of light impinges on the electronic target, an audio-visual signal results to indicate a hit.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: February 7, 1989
    Inventors: David L. W. Wong, Paul C. P. Leung, Friederich H. Spissinger