Perfectionnements aux réseaux d'équilibrage pour circuits téléphoniques,申请号FRD37385-传众专利搜索

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发明名称	Perfectionnements aux réseaux d'équilibrage pour circuits téléphoniques
摘要
申请公布号	FR37385(E)	申请公布日期	1930.11.29
申请号	FRD37385	申请日期	1929.09.02
申请人	SOCIETE D'ETUDES POUR LIAISONS TELEPHONIQUES ET TELEGRAPHIQUES A LONGUE DISTANCE	发明人
分类号	H04B3/14;H04B3/40	主分类号	H04B3/14
代理机构		代理人
主权项
地址

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