Improvements in or relating to thermionic valves,申请号GB19500008050-传众专利搜索

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发明名称	Improvements in or relating to thermionic valves
摘要
申请公布号	GB694569(A)	申请公布日期	1953.07.22
申请号	GB19500008050	申请日期	1950.03.30
申请人	ENGLISH ELECTRIC VALVE COMPANY LIMITED	发明人	YOUNG ARTHUR JAMES;DEHLSEN DAVID CARLTON
分类号	H01J21/02	主分类号	H01J21/02
代理机构		代理人
主权项
地址

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