Procédé et dispositif permettant de recueillir des vibrations sonores et plus particulièrement destinés à la radiodiffusion,申请号FRD746902-传众专利搜索

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发明名称	Procédé et dispositif permettant de recueillir des vibrations sonores et plus particulièrement destinés à la radiodiffusion
摘要
申请公布号	FR746902(A)	申请公布日期	1933.06.08
申请号	FRD746902	申请日期	1932.12.03
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H04R21/02	主分类号	H04R21/02
代理机构		代理人
主权项
地址

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