Improvements in or relating to the manufacture of thermionic valves,申请号GB19450003051-传众专利搜索

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发明名称	Improvements in or relating to the manufacture of thermionic valves
摘要
申请公布号	GB611033(A)	申请公布日期	1948.10.25
申请号	GB19450003051	申请日期	1945.02.06
申请人	HIVAC LIMITED;ALEXANDER RIZO RANGABE;CHARLES SEYMOUR WRIGHT	发明人
分类号	H01J19/28	主分类号	H01J19/28
代理机构		代理人
主权项
地址

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