Triode vacuum tube,申请号US19240751508-传众专利搜索

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发明名称	Triode vacuum tube
摘要
申请公布号	US1839907(A)	申请公布日期	1932.01.05
申请号	US19240751508	申请日期	1924.11.22
申请人	WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY	发明人	WADE WALLACE G.
分类号	H01J1/18	主分类号	H01J1/18
代理机构		代理人
主权项
地址

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