Improvements in or relating to electron lenses,申请号GB19370014013-传众专利搜索

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发明名称	Improvements in or relating to electron lenses
摘要
申请公布号	GB497645(A)	申请公布日期	1938.12.20
申请号	GB19370014013	申请日期	1937.05.20
申请人	HANS GERHARD LUBSZYNSKI	发明人
分类号	H01J29/66;H01J31/32	主分类号	H01J29/66
代理机构		代理人
主权项
地址

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