Systèmes de bureaux centraux de télécommunications à longue distance,申请号FRD66304-传众专利搜索

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发明名称	Systèmes de bureaux centraux de télécommunications à longue distance
摘要
申请公布号	FR66304(E)	申请公布日期	1956.06.29
申请号	FRD66304	申请日期
申请人	INTERNATIONAL STANDARD ELECTRIC CORPORATION	发明人	HERTOG MARTINUS DEN
分类号	H04Q3/00;H04Q3/42	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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