Electron discharge apparatus,申请号US19300479228-传众专利搜索

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发明名称	Electron discharge apparatus
摘要
申请公布号	US2032620(A)	申请公布日期	1936.03.03
申请号	US19300479228	申请日期	1930.09.02
申请人	GENERAL ELECTRIC COMPANY	发明人	LANGMUIR IRVING
分类号	H01G4/02;H03C3/14	主分类号	H01G4/02
代理机构		代理人
主权项
地址

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