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经营范围
发明名称
WATER BASE DRILLING FLUID
摘要
申请公布号
GB2216573(B)
申请公布日期
1992.02.05
申请号
GB19890005501
申请日期
1989.03.10
申请人
* SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV
发明人
ARTHUR HERMAN * HALE
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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