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发明名称
Electrode feeding device for arc welding apparatus
摘要
申请公布号
US2931890(A)
申请公布日期
1960.04.05
申请号
US19570634748
申请日期
1957.01.17
申请人
BERNARD ARTHUR A
发明人
BERNARD ARTHUR A.
分类号
B23K9/133
主分类号
B23K9/133
代理机构
代理人
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地址
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