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发明名称
Packer
摘要
申请公布号
GB2312698(B)
申请公布日期
2000.12.06
申请号
GB19970008261
申请日期
1997.04.24
申请人
* PETROLEUM ENGINEERING SERVICES LIMITED
发明人
STEPHEN * REID;RICHARD PAUL * RUBBO
分类号
E21B33/12;E21B33/128;E21B33/129;(IPC1-7):E21B23/06
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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