Dispositif de commutation pour l'établissement de liaisons entre stations téléphoniques,申请号FRD845247-传众专利搜索

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发明名称	Dispositif de commutation pour l'établissement de liaisons entre stations téléphoniques
摘要
申请公布号	FR845247(A)	申请公布日期	1939.08.16
申请号	FRD845247	申请日期	1938.10.27
申请人	LIGNES TELEGRAPHIQUES ET TELEPHONIQUES	发明人
分类号	H04M7/16	主分类号	H04M7/16
代理机构		代理人
主权项
地址

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