Patents by Inventor Wong S. Liu

Wong S. Liu 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).

  • Water rifle
    Patent number: D344311
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: February 15, 1994
    Assignee: Arco Toys, Ltd.
    Inventor: Wong S. Liu
  • Water pistol
    Patent number: D344556
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: February 22, 1994
    Assignee: Arco Toys, Ltd.
    Inventor: Wong S. Liu