Patents Assigned to Ningbo Geostar Electronics Co., Ltd.
  • Welding helmet
    Patent number: D700402
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 25, 2014
    Assignee: Ningbo Geostar Electronics Co., Ltd.
    Inventor: Jianrong Zhou
  • Welding helmet
    Patent number: D713604
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: September 16, 2014
    Assignee: Ningbo Geostar Electronics Co., Ltd.
    Inventor: Jianrong Zhou
  • Welding helmet
    Patent number: D728163
    Type: Grant
    Filed: August 31, 2014
    Date of Patent: April 28, 2015
    Assignee: Ningbo Geostar Electronics Co., Ltd.
    Inventor: Jianrong Zhou
  • Welding helmet
    Patent number: D742075
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: October 27, 2015
    Assignee: NINGBO GEOSTAR ELECTRONICS CO., LTD.
    Inventor: Jianrong Zhou