Thermionic emission source,申请号US19550529550-传众专利搜索

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发明名称	Thermionic emission source
摘要
申请公布号	US2850633(A)	申请公布日期	1958.09.02
申请号	US19550529550	申请日期	1955.08.19
申请人	PHILLIPS PETROLEUM COMPANY	发明人	ECHO MAURICE W.
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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