Improvements in or relating to thermionic valves,申请号GB19350006398-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	GB444844(A)	申请公布日期	1936.03.30
申请号	GB19350006398	申请日期	1935.02.28
申请人	TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE, M.B.H.	发明人
分类号	H01J1/20;H01J19/00	主分类号	H01J1/20
代理机构		代理人
主权项
地址

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