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发明名称
EMPLOYMENT OF BENTONITE IN BRINE MUDS
摘要
申请公布号
US3691070(A)
申请公布日期
1972.09.12
申请号
USD3691070
申请日期
1970.04.27
申请人
NATIONAL LEAD CO.
发明人
WILLIAM C. PIPPEN
分类号
B01F5/12;C09K8/05;E21B21/06;(IPC1-7):C10M3/02
主分类号
B01F5/12
代理机构
代理人
主权项
地址
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