Electron beam tube,申请号US19390283394-传众专利搜索

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发明名称	Electron beam tube
摘要
申请公布号	US2256311(A)	申请公布日期	1941.09.16
申请号	US19390283394	申请日期	1939.07.08
申请人	RADIO CORPORATION OF AMERICA	发明人	BRETT GEORGE FAIRBURN
分类号	H01J21/14	主分类号	H01J21/14
代理机构		代理人
主权项
地址

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