Verfahren zur Herstellung einer Wehnelt-Kathode.,申请号CHD139003-传众专利搜索

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发明名称	Verfahren zur Herstellung einer Wehnelt-Kathode.
摘要
申请公布号	CH139003(A)	申请公布日期	1930.03.31
申请号	CHD139003	申请日期	1929.03.15
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人	GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号		主分类号
代理机构		代理人
主权项
地址

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