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发明名称
Dataoverf°ring i borehull
摘要
申请公布号
NO305847(B1)
申请公布日期
1999.08.02
申请号
NO19930001149
申请日期
1993.03.26
申请人
METROL TECHNOLOGY LTD
发明人
SMITH, DAVID BALFOUR
分类号
E21B47/16;G08C23/02;(IPC1-7):E21B47/12
主分类号
E21B47/16
代理机构
代理人
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