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经营范围
发明名称
Arc welding apparatus with coated electrodes
摘要
申请公布号
US2166638(A)
申请公布日期
1939.07.18
申请号
US19370171185
申请日期
1937.10.27
申请人
THE FIRM KJELLBERG ELEKTRODEN & MASCHINEN G.M.B.H.
发明人
MULLER LUDWIG
分类号
B23K9/12
主分类号
B23K9/12
代理机构
代理人
主权项
地址
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