Improvements in electric discharge tubes,申请号GB19390013975-传众专利搜索

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发明名称	Improvements in electric discharge tubes
摘要
申请公布号	GB525595(A)	申请公布日期	1940.08.30
申请号	GB19390013975	申请日期	1939.05.10
申请人	THE MULLARD RADIO VALVE COMPANY LIMITED	发明人
分类号	H01J43/02	主分类号	H01J43/02
代理机构		代理人
主权项
地址

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