Improvements relating to arrangements in automatic telephone networks for the establishment of connections,申请号GB19460012569-传众专利搜索

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发明名称	Improvements relating to arrangements in automatic telephone networks for the establishment of connections
摘要
申请公布号	GB625025(A)	申请公布日期	1949.06.21
申请号	GB19460012569	申请日期	1946.04.25
申请人	EMIL RIGERT	发明人
分类号	H04Q3/00	主分类号	H04Q3/00
代理机构		代理人
主权项
地址

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