METHOD OF INCREASING THE GRINDING EFFICIENCIES OF MINERALS AND CEMENT,申请号USD3420687-传众专利搜索

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发明名称	METHOD OF INCREASING THE GRINDING EFFICIENCIES OF MINERALS AND CEMENT
摘要
申请公布号	US3420687(A)	申请公布日期	1969.01.07
申请号	USD3420687	申请日期	1965.05.10
申请人	W.R. GRACE & CO.	发明人	FRANK G. SERAFIN
分类号	B02C23/06;C04B24/12;(IPC1-7):C04B7/54;C04B7/58	主分类号	B02C23/06
代理机构		代理人
主权项
地址

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