Air cooling for thermionic tubes,申请号US19380214003-传众专利搜索

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发明名称	Air cooling for thermionic tubes
摘要
申请公布号	US2229446(A)	申请公布日期	1941.01.21
申请号	US19380214003	申请日期	1938.06.16
申请人	RADIO CORPORATION	发明人	FINCH JAMES LESLIE
分类号	H01J19/36	主分类号	H01J19/36
代理机构		代理人
主权项
地址

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