Electron discharge device,申请号US19590820636-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2941857(A)	申请公布日期	1960.06.21
申请号	US19590820636	申请日期	1959.06.16
申请人	THE RAULAND CORPORATION	发明人	NIKLAS WILFRID F.
分类号	H01J29/38	主分类号	H01J29/38
代理机构		代理人
主权项
地址

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