Improvements in or relating to thermionic valves,申请号GB19610029601-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	GB988861(A)	申请公布日期	1965.04.14
申请号	GB19610029601	申请日期	1961.08.16
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人	GUNNING WILLIAM JOHN
分类号	H01J19/42;H01J21/36	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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