,申请号DD19740177920-传众专利搜索

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发明名称
摘要
申请公布号	DD111952(A1)	申请公布日期	1975.03.12
申请号	DD19740177920	申请日期	1974.04.16
申请人		发明人
分类号	E02F9/00;(IPC1-7):E02F9/00	主分类号	E02F9/00
代理机构		代理人
主权项
地址

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