Improvements in automatic telephone systems,申请号GB19500026495-传众专利搜索

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发明名称	Improvements in automatic telephone systems
摘要
申请公布号	GB685169(A)	申请公布日期	1952.12.31
申请号	GB19500026495	申请日期	1950.10.31
申请人	THE GENERAL ELECTRIC COMPANY LIMITED;JOHN SCOWCROFT	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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