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发明名称
Method of forming an upset on the end of a tube
摘要
申请公布号
US3038251(A)
申请公布日期
1962.06.12
申请号
US19570697554
申请日期
1957.11.20
申请人
UNITED STATES STEEL CORPORATION
发明人
MOHNKERN GERALD E.;STONE RAYMOND L.
分类号
B21J5/08
主分类号
B21J5/08
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代理人
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