Perfectionnements à la fabrication des tubes à vide,申请号FRD1011590-传众专利搜索

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发明名称	Perfectionnements à la fabrication des tubes à vide
摘要
申请公布号	FR1011590(A)	申请公布日期	1952.06.24
申请号	FRD1011590	申请日期	1950.02.07
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	H01J5/28	主分类号	H01J5/28
代理机构		代理人
主权项
地址

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