Improvements in or relating to electron discharge devices,申请号GB19440014230-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	GB595251(A)	申请公布日期	1947.12.01
申请号	GB19440014230	申请日期	1944.07.25
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED	发明人
分类号	H01J21/06	主分类号	H01J21/06
代理机构		代理人
主权项
地址

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