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发明名称
Method and apparatus for deepwater drilling
摘要
申请公布号
US4813495(A)
申请公布日期
1989.03.21
申请号
US19870046823
申请日期
1987.05.05
申请人
CONOCO INC.
发明人
LEACH, COLIN P.
分类号
E21B33/064;E21B7/12;E21B21/00;E21B21/08;E21B33/035;E21B33/08;(IPC1-7):E21B7/124;E21B7/128
主分类号
E21B33/064
代理机构
代理人
主权项
地址
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