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发明名称
Electric welding apparatus and method
摘要
申请公布号
US2293079(A)
申请公布日期
1942.08.18
申请号
US19400363709
申请日期
1940.10.31
申请人
HANS RANKE
发明人
RANKE HANS
分类号
B23K9/073
主分类号
B23K9/073
代理机构
代理人
主权项
地址
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