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发明名称
Downhole tool apparatus
摘要
申请公布号
EP0855492(A3)
申请公布日期
1999.06.09
申请号
EP19980300483
申请日期
1998.01.23
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
RINGGENBERG, PAUL D.
分类号
E21B34/12;(IPC1-7):E21B34/12
主分类号
E21B34/12
代理机构
代理人
主权项
地址
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