Electron discharge device,申请号US19480036252-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2565357(A)	申请公布日期	1951.08.21
申请号	US19480036252	申请日期	1948.06.30
申请人	RADIO CORPORATION OF AMERICA	发明人	JR. JOHN S. DONAL,
分类号	H01J25/78	主分类号	H01J25/78
代理机构		代理人
主权项
地址

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