Patents by Inventor Qiongguang Zhang

Qiongguang Zhang 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).

  • Sewing machine
    Patent number: D678920
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: March 26, 2013
    Inventor: Qiongguang Zhang
  • Sewing machine
    Patent number: D849063
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 21, 2019
    Assignee: GUANGZHOU HUAFENG MECHANICAL & ELECTRICAL CO., LTD
    Inventor: Qiongguang Zhang