Perfectionnements aux systèmes électriques pour la transmission d'ondes de signalisation,申请号FRD724094-传众专利搜索

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发明名称	Perfectionnements aux systèmes électriques pour la transmission d'ondes de signalisation
摘要
申请公布号	FR724094(A)	申请公布日期	1932.04.21
申请号	FRD724094	申请日期	1931.09.15
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	H03F3/64	主分类号	H03F3/64
代理机构		代理人
主权项
地址

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