Improvements in or relating to thermionic valve signal selecting circuits,申请号GB19540006965-传众专利搜索

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发明名称	Improvements in or relating to thermionic valve signal selecting circuits
摘要
申请公布号	GB769698(A)	申请公布日期	1957.03.13
申请号	GB19540006965	申请日期	1954.03.10
申请人	CINEMA-TELEVISION LIMITED	发明人	WALLS WALTER RICHARD
分类号	H04J3/04	主分类号	H04J3/04
代理机构		代理人
主权项
地址

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