Improvements in or relating to electron discharge tubes,申请号GB19470021666-传众专利搜索

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发明名称	Improvements in or relating to electron discharge tubes
摘要
申请公布号	GB653315(A)	申请公布日期	1951.05.16
申请号	GB19470021666	申请日期	1947.08.07
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED	发明人
分类号	H01J29/38;H01J31/50	主分类号	H01J29/38
代理机构		代理人
主权项
地址

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