Alloys for indirectly-heated cathodes,申请号US19550546963-传众专利搜索

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发明名称	Alloys for indirectly-heated cathodes
摘要
申请公布号	US2809890(A)	申请公布日期	1957.10.15
申请号	US19550546963	申请日期	1955.11.15
申请人	SUPERIOR TUBE COMPANY	发明人	BOUNDS ARDREY M.
分类号	C22C19/03;H01J1/26	主分类号	C22C19/03
代理机构		代理人
主权项
地址

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