Système de téléphonie multiple à signalisation,申请号FRD863227-传众专利搜索

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发明名称	Système de téléphonie multiple à signalisation
摘要
申请公布号	FR863227(A)	申请公布日期	1941.03.27
申请号	FRD863227	申请日期	1940.02.03
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H04M7/08	主分类号	H04M7/08
代理机构		代理人
主权项
地址

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