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发明名称
Plug rolling mill
摘要
申请公布号
US2771800(A)
申请公布日期
1956.11.27
申请号
US19520275119
申请日期
1952.03.06
申请人
UNITED STATES STEEL CORPORATION
发明人
KRITSCHER ANDREW F.
分类号
B21B25/02;B21B25/06
主分类号
B21B25/02
代理机构
代理人
主权项
地址
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