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发明名称
Downhole apparatus
摘要
申请公布号
GB9805992(D0)
申请公布日期
1998.05.20
申请号
GB19980005992
申请日期
1998.03.21
申请人
OCRE (SCOTLAND) LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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