Improvements in or relating to electron optical systems,申请号GB19480007653-传众专利搜索

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发明名称	Improvements in or relating to electron optical systems
摘要
申请公布号	GB667268(A)	申请公布日期	1952.02.27
申请号	GB19480007653	申请日期	1948.03.12
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	H01J29/54;H01J37/28	主分类号	H01J29/54
代理机构		代理人
主权项
地址

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