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发明名称
Hydraulic jar
摘要
申请公布号
GB2286212(A)
申请公布日期
1995.08.09
申请号
GB19940025609
申请日期
1994.12.16
申请人
* HOUSTON ENGINEERS, INC.
发明人
BILLY JAMES * ROBERTS
分类号
E21B31/113;(IPC1-7):E21B31/113
主分类号
E21B31/113
代理机构
代理人
主权项
地址
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