Patents Assigned to SHANGHAI KAZHENG ENERGY TECHNOLOGY CO., LTD.
  • Collapsible triangular warning frame
    Patent number: D793890
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 8, 2017
    Assignee: SHANGHAI KAZHENG ENERGY TECHNOLOGY CO., LTD.
    Inventor: Xia Tie Hong