Perfectionnements aux tubes à décharge électrique avec une photocathode,申请号FRD870487-传众专利搜索

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发明名称	Perfectionnements aux tubes à décharge électrique avec une photocathode
摘要
申请公布号	FR870487(A)	申请公布日期	1942.03.12
申请号	FRD870487	申请日期	1941.03.01
申请人	TELEFUNKEN GESELLSCHAFT FU:R DRAHTLOSE TELEGRAPHIE M.B.H.	发明人
分类号	H01J40/06	主分类号	H01J40/06
代理机构		代理人
主权项
地址

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