Improvements in and relating to vacuum tubes and cathode structures therefor,申请号GB19310015397-传众专利搜索

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发明名称	Improvements in and relating to vacuum tubes and cathode structures therefor
摘要
申请公布号	GB378126(A)	申请公布日期	1932.08.11
申请号	GB19310015397	申请日期	1931.05.26
申请人	THE BRITISH THOMSON-HOUSTON COMPANY LIMITED	发明人
分类号	H01J35/14	主分类号	H01J35/14
代理机构		代理人
主权项
地址

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