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发明名称
Apparatus for catching debris in a well bore
摘要
申请公布号
GB2335687(B)
申请公布日期
2002.02.20
申请号
GB19990006813
申请日期
1999.03.25
申请人
* SPECIALISED PETROLEUM SERVICES LIMITED;* SPS-AFOS INTERNATIONAL;* SPS-AFOS GROUP LIMITED
发明人
MARK * CARMICHAEL;PAUL * HOWLETT
分类号
E21B21/00;E21B37/00;(IPC1-7):E21B37/00;E21B37/02;E21B43/08
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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