Perfectionnements dans la fabrication des tubes à vide, et plus particulièrement des lampes électroniques à plusieurs électrodes,申请号FRD989714-传众专利搜索

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发明名称	Perfectionnements dans la fabrication des tubes à vide, et plus particulièrement des lampes électroniques à plusieurs électrodes
摘要
申请公布号	FR989714(A)	申请公布日期	1951.09.12
申请号	FRD989714	申请日期	1944.03.03
申请人	SOCIETE FRANCAISE RADIO-ELECTRIQUE	发明人
分类号	H01J5/24	主分类号	H01J5/24
代理机构		代理人
主权项
地址

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