Making of barite concentrates useful in drilling muds,申请号US19450593530-传众专利搜索

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发明名称	Making of barite concentrates useful in drilling muds
摘要
申请公布号	US2442120(A)	申请公布日期	1948.05.25
申请号	US19450593530	申请日期	1945.05.12
申请人	MINERALS SEPARATION NORTH AMERICAN CORPORATION	发明人	DUKE JAMES B.
分类号	C09K8/14	主分类号	C09K8/14
代理机构		代理人
主权项
地址

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