Electron discharge device,申请号US19360114378-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2160086(A)	申请公布日期	1939.05.30
申请号	US19360114378	申请日期	1936.12.05
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	RONCI VICTOR L.;WEST JOHN W.
分类号	H01J19/40	主分类号	H01J19/40
代理机构		代理人
主权项
地址

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