Système téléphonique utilisant des lignes partagées,申请号FRD1144721-传众专利搜索

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发明名称	Système téléphonique utilisant des lignes partagées
摘要
申请公布号	FR1144721(A)	申请公布日期	1957.10.17
申请号	FRD1144721	申请日期	1956.01.11
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人	HERTOG MARTINUS DEN
分类号	H04Q5/00	主分类号	H04Q5/00
代理机构		代理人
主权项
地址

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