Electron discharge device,申请号US19340753447-传众专利搜索

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发明名称	Electron discharge device
摘要
申请公布号	US2027180(A)	申请公布日期	1936.01.07
申请号	US19340753447	申请日期	1934.11.17
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	LAICO JOSEPH P.
分类号	H01J21/06	主分类号	H01J21/06
代理机构		代理人
主权项
地址

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