Patents by Inventor Yiu K. Wan

Yiu K. Wan 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).

  • Combined audible alarm and flashlight
    Patent number: D294065
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: February 2, 1988
    Assignee: Lung Sun Plastic & Metal Fty. Limited
    Inventor: Yiu K. Wan
  • Coin dispenser
    Patent number: D350006
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: August 23, 1994
    Assignee: Flourishing Enterprises Development, Ltd.
    Inventor: Yiu K. Wan