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发明名称
摘要
申请公布号	DE1475392(U)	申请公布日期	1939.10.19
申请号	DE193800G2481U	申请日期	1938.05.05
申请人		发明人
分类号	G04B19/08	主分类号	G04B19/08
代理机构		代理人
主权项
地址

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