Verfahren zur Herstellung von ueberzogenen Gluehkathoden,申请号DE1929M109273D-传众专利搜索

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发明名称	Verfahren zur Herstellung von ueberzogenen Gluehkathoden
摘要
申请公布号	DE593936(C)	申请公布日期	1934.03.07
申请号	DE1929M109273D	申请日期	1929.03.15
申请人	RADIO-ROEHREN-LABORATORIUM DR. NICKEL G.M.B.H.	发明人
分类号	H01J9/04	主分类号	H01J9/04
代理机构		代理人
主权项
地址

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