Melting and refining metals,申请号US19560629960-传众专利搜索

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发明名称	Melting and refining metals
摘要
申请公布号	US2809905(A)	申请公布日期	1957.10.15
申请号	US19560629960	申请日期	1956.12.21
申请人	NATIONAL RESEARCH DEVELOPMENT CORPORATION	发明人	DAVIS MICHAEL;LEVER REGINALD FRANK
分类号	C30B13/00;C30B13/12;C30B13/22;H01J37/305	主分类号	C30B13/00
代理机构		代理人
主权项
地址

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