Perfectionnements aux procédés et systèmes pour l'obtention d'une basse fréquence étalon,申请号FRD975419-传众专利搜索

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发明名称	Perfectionnements aux procédés et systèmes pour l'obtention d'une basse fréquence étalon
摘要
申请公布号	FR975419(A)	申请公布日期	1951.03.05
申请号	FRD975419	申请日期	1948.11.24
申请人	RADIO CORPORATION OF AMERICA	发明人
分类号	H03L7/26	主分类号	H03L7/26
代理机构		代理人
主权项
地址

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