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发明名称
Electric resistance spot welding apparatus
摘要
申请公布号
US2502876(A)
申请公布日期
1950.04.04
申请号
US19490071565
申请日期
1949.01.19
申请人
AMPCO METAL, INC.
发明人
MULLEN HENRY A.
分类号
B23K11/30
主分类号
B23K11/30
代理机构
代理人
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地址
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