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经营范围
发明名称
Fluid loss control additives and subterranean treatment fluids containing the same
摘要
申请公布号
US6180571(B2)
申请公布日期
2001.01.30
申请号
US08/901805
申请日期
1997.07.28
申请人
发明人
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主分类号
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