Switching arrangement in automatic telephone systems,申请号GB19290014896-传众专利搜索

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发明名称	Switching arrangement in automatic telephone systems
摘要
申请公布号	GB311709(A)	申请公布日期	1930.08.13
申请号	GB19290014896	申请日期	1929.05.13
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	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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