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发明名称
Consolidated rig
摘要
申请公布号
US2536483(A)
申请公布日期
1951.01.02
申请号
US19440547264
申请日期
1944.07.29
申请人
THE NATIONAL SUPPLY COMPANY
发明人
YOUNG FORREST J.
分类号
E21B3/02
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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