Patents by Inventor Guofu Tu

Guofu Tu 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).

  • Patent number: D563912
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 11, 2008
    Assignee: Guangzhou Echom Science & Technology Group Co., Ltd.
    Inventor: Guofu Tu
  • Patent number: D565518
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: April 1, 2008
    Assignee: Guangzhou Echom Science & Technology Group Co., Ltd.
    Inventor: Guofu Tu