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经营范围
发明名称
DRILLING FLUID
摘要
申请公布号
GB9013758(D0)
申请公布日期
1990.08.08
申请号
GB19900013758
申请日期
1990.06.20
申请人
BRITISH PETROLEUM COMPANY PLC, THE
发明人
分类号
C09K8/24
主分类号
C09K8/24
代理机构
代理人
主权项
地址
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