Improvements relating to electron discharge devices,申请号GB19550037269-传众专利搜索

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发明名称	Improvements relating to electron discharge devices
摘要
申请公布号	GB817283(A)	申请公布日期	1959.07.29
申请号	GB19550037269	申请日期	1955.12.29
申请人	GENERAL ELECTRIC COMPANY	发明人
分类号	H01J23/027	主分类号	H01J23/027
代理机构		代理人
主权项
地址

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