Electron discharge device,申请号US19430497456-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2412800(A)	申请公布日期	1946.12.17
申请号	US19430497456	申请日期	1943.08.05
申请人	RADIO CORPORATION	发明人	CURTIS LUCIEN B.
分类号	H01J19/42	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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