Electron beam control apparatus,申请号US19470729421-传众专利搜索

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发明名称	Electron beam control apparatus
摘要
申请公布号	US2490731(A)	申请公布日期	1949.12.06
申请号	US19470729421	申请日期	1947.02.19
申请人	RADIO CORPORATION OF AMERICA	发明人	GOODALE ELMER D.;SCHADE OTTO H.
分类号	H01J29/46;H01J31/28;H01J31/36	主分类号	H01J29/46
代理机构		代理人
主权项
地址

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