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经营范围
发明名称
Tube rolling mill
摘要
申请公布号
US2017374(A)
申请公布日期
1935.10.15
申请号
US19320632052
申请日期
1932.09.07
申请人
NATIONAL TUBE COMPANY
发明人
OLSON OLOF F.
分类号
B21B19/08
主分类号
B21B19/08
代理机构
代理人
主权项
地址
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