Sprechanlage,申请号DE1948P026174-传众专利搜索

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发明名称	Sprechanlage
摘要
申请公布号	DE815356(C)	申请公布日期	1951.10.01
申请号	DE1948P026174	申请日期	1948.12.23
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人	MANTZ MARIUS ROBERT
分类号	H04M9/00;H04R3/00	主分类号	H04M9/00
代理机构		代理人
主权项
地址

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