Dispositif de transmission d'oscillations électriques à fréquence acoustique,申请号FRD980575-传众专利搜索

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发明名称	Dispositif de transmission d'oscillations électriques à fréquence acoustique
摘要
申请公布号	FR980575(A)	申请公布日期	1951.05.15
申请号	FRD980575	申请日期	1949.02.09
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G10H1/00	主分类号	G10H1/00
代理机构		代理人
主权项
地址

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