Improvements in or relating to automatic telephone systems,申请号GB19480033047-传众专利搜索

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发明名称	Improvements in or relating to automatic telephone systems
摘要
申请公布号	GB656118(A)	申请公布日期	1951.08.15
申请号	GB19480033047	申请日期	1948.12.22
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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