Dispositif avertisseur pour le contrôle du volume des sons transformés en courantsvibrés modulés,申请号FRD771695-传众专利搜索

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发明名称	Dispositif avertisseur pour le contrôle du volume des sons transformés en courantsvibrés modulés
摘要
申请公布号	FR771695(A)	申请公布日期	1934.10.13
申请号	FRD771695	申请日期	1933.07.13
申请人		发明人	RICCHIARDI PIER CARLO;DURAND LOUIS PAUL
分类号	H03G3/20	主分类号	H03G3/20
代理机构		代理人
主权项
地址

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