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经营范围
发明名称
DRILLING FLUIDS
摘要
申请公布号
US3654164(A)
申请公布日期
1972.04.04
申请号
USD3654164
申请日期
1970.06.03
申请人
PETROLEUM SOLIDS CONTROL INC.
发明人
RUSSELL L. SPERRY
分类号
C09K8/22;(IPC1-7):C10M3/22
主分类号
C09K8/22
代理机构
代理人
主权项
地址
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