,申请号DED1311450U-传众专利搜索

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发明名称
摘要
申请公布号	DE1311450(U)	申请公布日期	1935.04.13
申请号	DED1311450U	申请日期	1934.07.02
申请人		发明人
分类号	G04B19/30	主分类号	G04B19/30
代理机构		代理人
主权项
地址

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