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发明名称
METHOD OF LOCATING A MEMBER IN A BOREHOLE
摘要
申请公布号
GB2214638(B)
申请公布日期
1991.11.13
申请号
GB19880001881
申请日期
1988.01.28
申请人
* COAL INDUSTRY
发明人
ALAN * MEADOWS
分类号
E21B23/14;E21B33/13;E21B47/024;G01V11/00
主分类号
E21B23/14
代理机构
代理人
主权项
地址
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