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发明名称
RIEGEL FUER EINE VORRICHTUNG IM BOHRLOCH.
摘要
申请公布号
DE3784104(T2)
申请公布日期
1993.06.03
申请号
DE19873784104T
申请日期
1987.05.26
申请人
HALLIBURTON CO., DUNCAN, OKLA., US
发明人
BARRINGTON, BURCHUS QUINTON, DUNCAN OKLAHOMA 73533, US
分类号
E21B23/04;E21B33/124;(IPC1-7):E21B23/04
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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