Dispositif de signalisation électro-acoustique,申请号FRD798353-传众专利搜索

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发明名称	Dispositif de signalisation électro-acoustique
摘要
申请公布号	FR798353(A)	申请公布日期	1936.05.15
申请号	FRD798353	申请日期	1935.11.27
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G10K9/12	主分类号	G10K9/12
代理机构		代理人
主权项
地址

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