Patents by Inventor John Won

John Won 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).

  • Sound and/or light generating device for skateboards
    Patent number: 5004256
    Abstract: A combination of a skateboard and electronic device for generating sound and/or light. The electronic device is affixed under the skateboard and a switch means is provided that can be operated by stepping on an operating element thereof.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: April 2, 1991
    Inventor: John Won