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发明名称
Welding of tubes and the like
摘要
申请公布号
US2808493(A)
申请公布日期
1957.10.01
申请号
US19540461459
申请日期
1954.10.11
申请人
BRENNAN JOSEPH B
发明人
BRENNAN JOSEPH B.
分类号
B21C37/08
主分类号
B21C37/08
代理机构
代理人
主权项
地址
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