Method of forming thermionic cathodes,申请号US19630257293-传众专利搜索

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发明名称	Method of forming thermionic cathodes
摘要
申请公布号	US3307974(A)	申请公布日期	1967.03.07
申请号	US19630257293	申请日期	1963.02.08
申请人	RANK RADIO AND TELEVISION LIMITED	发明人	DAVIS EDWIN JOHN
分类号	H01J9/04	主分类号	H01J9/04
代理机构		代理人
主权项
地址

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