Mit permanentmagnetischer Erregung arbeitende Elektronenlinse,申请号DE1948P012132-传众专利搜索

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发明名称	Mit permanentmagnetischer Erregung arbeitende Elektronenlinse
摘要
申请公布号	DE857991(C)	申请公布日期	1956.01.12
申请号	DE1948P012132	申请日期	1948.10.01
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人	RUSKA ERNST DR.-ING.
分类号	H01J37/143	主分类号	H01J37/143
代理机构		代理人
主权项
地址

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