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发明名称
Improvements in or relating to down-hole tools
摘要
申请公布号
GB9509933(D0)
申请公布日期
1995.07.12
申请号
GB19950009933
申请日期
1995.05.17
申请人
PETROLEUM ENGINEERING SERVICES LIMITED
发明人
分类号
主分类号
代理机构
代理人
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地址
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