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发明名称
Electrode for spot welding
摘要
申请公布号
US2208977(A)
申请公布日期
1940.07.23
申请号
US19390270196
申请日期
1939.04.26
申请人
HALL PRESTON M
发明人
HALL PRESTON M.
分类号
B23K11/30;B23K35/02
主分类号
B23K11/30
代理机构
代理人
主权项
地址
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