Electron discharge device,申请号US19420445131-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2477122(A)	申请公布日期	1949.07.26
申请号	US19420445131	申请日期	1942.05.30
申请人	RADIO CORPORATION OF AMERICA	发明人	GARNER LLOYD P.
分类号	H01J23/16	主分类号	H01J23/16
代理机构		代理人
主权项
地址

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