,申请号DD19740177714-传众专利搜索

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发明名称
摘要
申请公布号	DD110535(A1)	申请公布日期	1974.12.20
申请号	DD19740177714	申请日期	1974.04.05
申请人		发明人
分类号	E04G23/08;(IPC1-7):E04G23/08	主分类号	E04G23/08
代理机构		代理人
主权项
地址

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