Improvements in or relating to telephone or like systems,申请号GB19480031108-传众专利搜索

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发明名称	Improvements in or relating to telephone or like systems
摘要
申请公布号	GB654134(A)	申请公布日期	1951.06.06
申请号	GB19480031108	申请日期	1948.12.01
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED	发明人	HOPLEY HORACE EDWARD;GALVIN JOHN LESLIE
分类号	H04Q1/24	主分类号	H04Q1/24
代理机构		代理人
主权项
地址

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