Patents by Inventor Kin-Kau Keith Li

Kin-Kau Keith Li 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).

  • Back pack toy
    Patent number: D381704
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: July 29, 1997
    Assignee: Build Key Manufactory Co., Ltd.
    Inventor: Kin-Kau Keith Li