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发明名称
Rolling mill mandrel
摘要
申请公布号
US2159123(A)
申请公布日期
1939.05.23
申请号
US19360109973
申请日期
1936.11.09
申请人
NATIONAL TUBE COMPANY
发明人
ANATER RAYMOND J.
分类号
B21B25/04
主分类号
B21B25/04
代理机构
代理人
主权项
地址
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