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经营范围
发明名称
Arc welding
摘要
申请公布号
GB774450(A)
申请公布日期
1957.05.08
申请号
GB19550015118
申请日期
1955.05.25
申请人
AIR REDUCTION COMPANY
发明人
分类号
B23K9/173
主分类号
B23K9/173
代理机构
代理人
主权项
地址
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