Improvements in the manufacture of valves having oxide-coated thermionic cathodes,申请号GB19380016114-传众专利搜索

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发明名称	Improvements in the manufacture of valves having oxide-coated thermionic cathodes
摘要
申请公布号	GB515371(A)	申请公布日期	1939.12.04
申请号	GB19380016114	申请日期	1938.05.30
申请人	THE M-O VALVE COMPANY LIMITED;MARK BENJAMIN	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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