Patents by Inventor Wai M. Wong

Wai M. 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).

  • Educational toy
    Patent number: D349729
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: August 16, 1994
    Assignee: VTech Industries, Inc.
    Inventor: Wai M. Wong