Patents by Inventor Yan Ko

Yan Ko 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).

  • Automatic watch winding box
    Patent number: D719991
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: December 23, 2014
    Assignee: Abest Products Resourcing Inc.
    Inventor: Yan Ko