Thermionic tube and circuit,申请号US19390264689-传众专利搜索

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法人/股东/高管

发明名称	Thermionic tube and circuit
摘要
申请公布号	US2256177(A)	申请公布日期	1941.09.16
申请号	US19390264689	申请日期	1939.03.29
申请人	REVELATION PATENTS HOLDING COMPANY	发明人	STROMEYER CHARLES FRANCIS
分类号	H01J21/02	主分类号	H01J21/02
代理机构		代理人
主权项
地址

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