Perfectionnements aux dispositifs reproducteurs de films sonores,申请号FRD705862-传众专利搜索

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发明名称	Perfectionnements aux dispositifs reproducteurs de films sonores
摘要
申请公布号	FR705862(A)	申请公布日期	1931.06.16
申请号	FRD705862	申请日期	1930.11.18
申请人	ETABLISSEMENTS RENARD ET MOIROUX	发明人
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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