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发明名称
Device for the control of electric arc welding machines
摘要
申请公布号
US1904112(A)
申请公布日期
1933.04.18
申请号
US19310522335
申请日期
1931.03.13
申请人
JEAN ACHARD
发明人
ACHARD JEAN
分类号
B23K9/02
主分类号
B23K9/02
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代理人
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