Perfectionnements apportés à l'émission de sons par les récepteurs radiophoniques et les machines parlantes,申请号FRD715266-传众专利搜索

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发明名称	Perfectionnements apportés à l'émission de sons par les récepteurs radiophoniques et les machines parlantes
摘要
申请公布号	FR715266(A)	申请公布日期	1931.11.28
申请号	FRD715266	申请日期	1931.02.27
申请人		发明人	FABBRI PILADE
分类号	H04R1/34	主分类号	H04R1/34
代理机构		代理人
主权项
地址

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