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经营范围
发明名称
DRILLING FLUID
摘要
申请公布号
US3620973(A)
申请公布日期
1971.11.16
申请号
USD3620973
申请日期
1969.12.23
申请人
TEXACO INC.
发明人
CHARLES M. HARBORDT
分类号
C09K8/22;(IPC1-7):C10M3/16;C10M3/14
主分类号
C09K8/22
代理机构
代理人
主权项
地址
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