Improvements in or relating to electron discharge devices,申请号GB19480005011-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	GB656561(A)	申请公布日期	1951.08.29
申请号	GB19480005011	申请日期	1948.02.20
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H01J25/36;H01J25/78	主分类号	H01J25/36
代理机构		代理人
主权项
地址

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