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发明名称
Drilling rigs
摘要
申请公布号
GB2166176(A)
申请公布日期
1986.04.30
申请号
GB19840027420
申请日期
1984.10.30
申请人
* RIG DESIGN SERVICES LIMITED
发明人
DAVID JOHN * MORRIS;BARRY JOHN * THOMPSON
分类号
E21B15/00;(IPC1-7):E21B15/02
主分类号
E21B15/00
代理机构
代理人
主权项
地址
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