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发明名称
A downhole tool
摘要
申请公布号
GB9716408(D0)
申请公布日期
1997.10.08
申请号
GB19970016408
申请日期
1997.08.04
申请人
SPECIALISED PETROLEUM SERVICES LIMITED
发明人
分类号
主分类号
代理机构
代理人
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