Improvements relating to corundum powder,申请号GB19640031306-传众专利搜索

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发明名称	Improvements relating to corundum powder
摘要
申请公布号	GB1078536(A)	申请公布日期	1967.08.09
申请号	GB19640031306	申请日期	1964.08.04
申请人	E. I. DU PONT DE NEMOURS AND COMPANY	发明人
分类号	B01J20/08;C01F7/02;C01F7/46	主分类号	B01J20/08
代理机构		代理人
主权项
地址

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