Improvements in or relating to electron discharge devices,申请号GB19470010371-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	GB654648(A)	申请公布日期	1951.06.27
申请号	GB19470010371	申请日期	1947.04.18
申请人	RAYTHEON MANUFACTURING COMPANY	发明人
分类号	H01J23/22	主分类号	H01J23/22
代理机构		代理人
主权项
地址

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