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发明名称
Cooling means for rotating mandrel bars
摘要
申请公布号
US2212688(A)
申请公布日期
1940.08.27
申请号
US19380242125
申请日期
1938.11.23
申请人
NATIONAL TUBE COMPANY
发明人
JONES GEORGE H.
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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