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发明名称
HYDRAULICALLY ACTUATED PACKER ASSEMBLY WITH TANDEM PISTON AND CYLINDER ARRANGEMENT
摘要
申请公布号
GB2230804(B)
申请公布日期
1992.10.14
申请号
GB19900007732
申请日期
1990.04.05
申请人
* BAKER HUGHES INCORPORATED
发明人
RICHARD P. * RUBBO
分类号
E21B33/1295
主分类号
E21B33/1295
代理机构
代理人
主权项
地址
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