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发明名称
Sand screens
摘要
申请公布号
GB0423627(D0)
申请公布日期
2004.11.24
申请号
GB20040023627
申请日期
2003.02.28
申请人
SCHLUMBERGER HOLDINGS LIMITED
发明人
分类号
E21B43/08;E21B47/12
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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