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发明名称
摘要
申请公布号	NL6805300(A)	申请公布日期	1969.10.15
申请号	NL19680005300	申请日期	1968.04.13
申请人		发明人
分类号	C01B31/30;C30B11/12;(IPC1-7):B01J/;C01B/	主分类号	C01B31/30
代理机构		代理人
主权项
地址

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