Electron discharge device,申请号US19430492818-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2413244(A)	申请公布日期	1946.12.24
申请号	US19430492818	申请日期	1943.06.30
申请人	RADIO CORPORATION	发明人	NORTH DWIGHT O.
分类号	H01J25/78;H03F1/28	主分类号	H01J25/78
代理机构		代理人
主权项
地址

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