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经营范围
发明名称
Rolling mill
摘要
申请公布号
US1990051(A)
申请公布日期
1935.02.05
申请号
US19320587574
申请日期
1932.01.19
申请人
TREADWELL ENGINEERING COMPANY
发明人
SCHRECK HANS L.
分类号
B21B31/24
主分类号
B21B31/24
代理机构
代理人
主权项
地址
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