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经营范围
发明名称
DRILLING FLUID
摘要
申请公布号
EP0255161(A3)
申请公布日期
1989.10.11
申请号
EP19870201274
申请日期
1987.07.01
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
DAVIDSON, COLIN JAMES
分类号
C09K8/26;(IPC1-7):C09K7/02
主分类号
C09K8/26
代理机构
代理人
主权项
地址
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