Perfectionnements aux agencements d'alimentation en courant pour systèmes téléphoniques,申请号FRD837884-传众专利搜索

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发明名称	Perfectionnements aux agencements d'alimentation en courant pour systèmes téléphoniques
摘要
申请公布号	FR837884(A)	申请公布日期	1939.02.22
申请号	FRD837884	申请日期	1938.05.12
申请人	ASSOCIATED ELECTRIC LABORATORIES INC.	发明人
分类号	H04Q1/38	主分类号	H04Q1/38
代理机构		代理人
主权项
地址

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