Vorrichtung zur Ton- und Bild-Wiedergabe,申请号DE1928E037341D-传众专利搜索

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发明名称	Vorrichtung zur Ton- und Bild-Wiedergabe
摘要
申请公布号	DE550738(C)	申请公布日期	1932.05.20
申请号	DE1928E037341D	申请日期	1928.04.27
申请人	DIPL.-ING. FRANZ EHRENHAFT	发明人
分类号	G03B31/00	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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