Dispositif pour maintenir une fréquence constante,申请号FRD1030464-传众专利搜索

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发明名称	Dispositif pour maintenir une fréquence constante
摘要
申请公布号	FR1030464(A)	申请公布日期	1953.06.15
申请号	FRD1030464	申请日期	1951.01.04
申请人	COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ	发明人
分类号	H02P9/42	主分类号	H02P9/42
代理机构		代理人
主权项
地址

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