Circuits de répeteurs pour systèmes de signalisation électrique,申请号FRD850910-传众专利搜索

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发明名称	Circuits de répeteurs pour systèmes de signalisation électrique
摘要
申请公布号	FR850910(A)	申请公布日期	1939.12.29
申请号	FRD850910	申请日期	1939.02.27
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	B62M9/08;H03F1/54	主分类号	B62M9/08
代理机构		代理人
主权项
地址

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