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发明名称
Seamless tube mill
摘要
申请公布号
US1826360(A)
申请公布日期
1931.10.06
申请号
US19300445431
申请日期
1930.04.18
申请人
NATIONAL TUBE COMPANY
发明人
MAZURIE JAMES V.;PATTERSON THOMAS
分类号
B21B23/00
主分类号
B21B23/00
代理机构
代理人
主权项
地址
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