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发明名称
Electric arc welding systems
摘要
申请公布号
US2867743(A)
申请公布日期
1959.01.06
申请号
US19540441428
申请日期
1954.07.06
申请人
E. R. A. PATENTS LIMITED
发明人
NEEDHAM JAMES CHRISTOPHER;HULL WILLIAM GRIFFIN;HOULDCROFT PETER THOMAS
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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