Cathode structure of electric discharge apparatus,申请号US19320594944-传众专利搜索

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发明名称	Cathode structure of electric discharge apparatus
摘要
申请公布号	US1955541(A)	申请公布日期	1934.04.17
申请号	US19320594944	申请日期	1932.02.24
申请人	GENERAL ELECTRIC COMPANY	发明人	ENGEL KURT
分类号	H01J1/20;H01J29/48	主分类号	H01J1/20
代理机构		代理人
主权项
地址

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