Improvements in or relating to electric signal amplifier systems,申请号GB19510006367-传众专利搜索

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发明名称	Improvements in or relating to electric signal amplifier systems
摘要
申请公布号	GB690590(A)	申请公布日期	1953.04.22
申请号	GB19510006367	申请日期	1951.03.16
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H04J1/10;H04J3/00	主分类号	H04J1/10
代理机构		代理人
主权项
地址

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