Improvements in or relating to telecommunication exchange systems,申请号GB19520024845-传众专利搜索

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发明名称	Improvements in or relating to telecommunication exchange systems
摘要
申请公布号	GB701738(A)	申请公布日期	1953.12.30
申请号	GB19520024845	申请日期	1950.05.05
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H04Q3/42	主分类号	H04Q3/42
代理机构		代理人
主权项
地址

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