Improvements in and relating to thermionic cathodes,申请号GB19410015581-传众专利搜索

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发明名称	Improvements in and relating to thermionic cathodes
摘要
申请公布号	GB553832(A)	申请公布日期	1943.06.08
申请号	GB19410015581	申请日期	1941.12.03
申请人	FREDERICK BARTON;CECIL HEDWORTH MAYER	发明人
分类号	H01J9/04	主分类号	H01J9/04
代理机构		代理人
主权项
地址

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