Electron discharge device,申请号US19370131153-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2245174(A)	申请公布日期	1941.06.10
申请号	US19370131153	申请日期	1937.03.16
申请人	RADIO CORPORATION	发明人	BANKS GEORGE BALDWIN
分类号	H01J25/76	主分类号	H01J25/76
代理机构		代理人
主权项
地址

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