Improvements in or relating to electric signalling arrangements including multi-grid thermionic valves,申请号GB19370020740-传众专利搜索

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发明名称	Improvements in or relating to electric signalling arrangements including multi-grid thermionic valves
摘要
申请公布号	GB499823(A)	申请公布日期	1939.01.27
申请号	GB19370020740	申请日期	1937.07.27
申请人	TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE, M.B.H.	发明人
分类号	H03F3/48	主分类号	H03F3/48
代理机构		代理人
主权项
地址

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