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发明名称
ANNULUS PRESSURE RESPONSIVE TESTER VALVE
摘要
申请公布号
MY8700498(A)
申请公布日期
1987.12.31
申请号
MY19870000498
申请日期
1987.12.30
申请人
HALLIBURTON COMPANY
发明人
BECK, HAROLD KENT
分类号
E21B34/00;E21B34/10;E21B49/00;E21B49/08;(IPC1-7):E21B34/10
主分类号
E21B34/00
代理机构
代理人
主权项
地址
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