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经营范围
发明名称
Electric welding machine
摘要
申请公布号
US1838899(A)
申请公布日期
1931.12.29
申请号
US19280250029
申请日期
1928.01.27
申请人
ARNOLD ALFRED E
发明人
ARNOLD ALFRED E.
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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