Improvements in or relating to electron discharge devices,申请号GB19350019515-传众专利搜索

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发明名称	Improvements in or relating to electron discharge devices
摘要
申请公布号	GB453722(A)	申请公布日期	1936.09.17
申请号	GB19350019515	申请日期	1935.07.08
申请人	TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.	发明人
分类号	H01J21/12	主分类号	H01J21/12
代理机构		代理人
主权项
地址

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