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发明名称
Arc welding rod
摘要
申请公布号
US1921528(A)
申请公布日期
1933.08.08
申请号
US19290396414
申请日期
1929.09.30
申请人
OXWELD ACETYLENE COMPANY
发明人
KEIR JAMES M.
分类号
B23K35/30
主分类号
B23K35/30
代理机构
代理人
主权项
地址
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