Patents Assigned to Shanghai Hugong Electric Welding Machine MFG Co., Ltd
  • MIG welder
    Patent number: D569883
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 27, 2008
    Assignee: Shanghai Hugong Electric Welding Machine MFG Co., Ltd
    Inventor: Chuanzhu Wang
  • Auto wire-feeding welder
    Patent number: D569884
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 27, 2008
    Assignee: Shanghai Hugong Electric Welding Machine Mfg Co., Ltd
    Inventor: Hongrui Shu