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经营范围
发明名称
DRILLING FLUID ADDITIVE
摘要
申请公布号
GB9100699(D0)
申请公布日期
1991.02.27
申请号
GB19910000699
申请日期
1991.01.12
申请人
BRITISH PETROLEUM COMPANY, THE P.L.C
发明人
分类号
C09K8/22
主分类号
C09K8/22
代理机构
代理人
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