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发明名称
Oil-base drilling fluids
摘要
申请公布号
US2607731(A)
申请公布日期
1952.08.19
申请号
US19500202803
申请日期
1950.12.26
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
FISCHER PAUL W.
分类号
C09K8/32
主分类号
C09K8/32
代理机构
代理人
主权项
地址
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