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发明名称
Styrbar boring med borehullsmotor
摘要
申请公布号
NO972878(D0)
申请公布日期
1997.06.20
申请号
NO19970002878
申请日期
1997.06.20
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
FAURE, ALBAN MICHEL
分类号
E21B7/06;(IPC1-7):E21B7/06
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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