,申请号DD19740179131-传众专利搜索

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发明名称
摘要
申请公布号	DD111881(A1)	申请公布日期	1975.03.12
申请号	DD19740179131	申请日期	1974.06.13
申请人		发明人
分类号	(IPC1-7):C01B7/08	主分类号	(IPC1-7):C01B7/08
代理机构		代理人
主权项
地址

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