Amplificateurs pour courants de signalisation,申请号FRD800970-传众专利搜索

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发明名称	Amplificateurs pour courants de signalisation
摘要
申请公布号	FR800970(A)	申请公布日期	1936.07.23
申请号	FRD800970	申请日期	1935.12.27
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	H03C1/56;H03F9/00;H03F9/02	主分类号	H03C1/56
代理机构		代理人
主权项
地址

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