Improvements in or relating to electron discharge devices,申请号GB19570003880-传众专利搜索

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发明名称	Improvements in or relating to electron discharge devices
摘要
申请公布号	GB880522(A)	申请公布日期	1961.10.25
申请号	GB19570003880	申请日期	1957.02.05
申请人	ELECTRIC AND MUSICAL INDUSTRIES LIMITED	发明人	ATHERTON ALBERT HORACE
分类号	H01J25/24	主分类号	H01J25/24
代理机构		代理人
主权项
地址

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