Cathode and method of making same,申请号US19570691662-传众专利搜索

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发明名称	Cathode and method of making same
摘要
申请公布号	US2939033(A)	申请公布日期	1960.05.31
申请号	US19570691662	申请日期	1957.10.22
申请人	VARIAN ASSOCIATES	发明人	NELSON WALTER E.
分类号	H01J3/02	主分类号	H01J3/02
代理机构		代理人
主权项
地址

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