Improvements in and relating to automatic telephone systems,申请号GB19340030990-传众专利搜索

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发明名称	Improvements in and relating to automatic telephone systems
摘要
申请公布号	GB451267(A)	申请公布日期	1935.04.29
申请号	GB19340030990	申请日期	1934.10.29
申请人	JOZSEF KLEIN;KAROLY BULISSA	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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