Perfectionnements à la fabrication des lampes électriques, tubes à vide ou pièces analogues,申请号FRD945119-传众专利搜索

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发明名称	Perfectionnements à la fabrication des lampes électriques, tubes à vide ou pièces analogues
摘要
申请公布号	FR945119(A)	申请公布日期	1949.04.26
申请号	FRD945119	申请日期	1947.04.16
申请人	COMPAGNIE DES LAMPES	发明人
分类号	H01J9/40	主分类号	H01J9/40
代理机构		代理人
主权项
地址

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