Construction of thermionic valves,申请号US19590813833-传众专利搜索

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发明名称	Construction of thermionic valves
摘要
申请公布号	US2960619(A)	申请公布日期	1960.11.15
申请号	US19590813833	申请日期	1959.05.18
申请人	SIEMENS EDISON SWAN LIMITED	发明人	FARROW FREDERIC WILLIAM RODBARD
分类号	H01J19/46	主分类号	H01J19/46
代理机构		代理人
主权项
地址

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