Tubes électroniques à plusieurs grilles,申请号FRD64809-传众专利搜索

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发明名称	Tubes électroniques à plusieurs grilles
摘要
申请公布号	FR64809(E)	申请公布日期	1955.12.13
申请号	FRD64809	申请日期	1952.07.25
申请人	COMPAGNIE FRANCAISE THOMSON-HOUSTON	发明人
分类号	H01J21/36	主分类号	H01J21/36
代理机构		代理人
主权项
地址

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