Perfectionnements aux tubes électroniques,申请号FR19590807332-传众专利搜索

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发明名称	Perfectionnements aux tubes électroniques
摘要
申请公布号	FR1237536(A)	申请公布日期	1960.07.29
申请号	FR19590807332	申请日期	1959.10.13
申请人	RADIO CORPORATION OF AMERICA	发明人
分类号	H01J19/40	主分类号	H01J19/40
代理机构		代理人
主权项
地址

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