Patents by Inventor Quan Guan Shi

Quan Guan Shi 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).

  • Rotor blades for a toy helicopter
    Patent number: D539358
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: March 27, 2007
    Assignee: Global Billion International, Ltd.
    Inventor: Quan Guan Shi
  • Toy mini flying saucer
    Patent number: D552690
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: October 9, 2007
    Assignee: Global Billion International Limited
    Inventor: Quan Guan Shi