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发明名称
Variable electrode feed for consumable-electrode arc welding
摘要
申请公布号
US2857546(A)
申请公布日期
1958.10.21
申请号
US19570651001
申请日期
1957.04.05
申请人
A. O. SMITH CORPORATION
发明人
LUND HAROLD S.
分类号
B23K9/073
主分类号
B23K9/073
代理机构
代理人
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地址
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