Process of separating niobium and tantalum values in oxidic ores and of producing pure niobium,申请号US19580709468-传众专利搜索

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发明名称	Process of separating niobium and tantalum values in oxidic ores and of producing pure niobium
摘要
申请公布号	US2992095(A)	申请公布日期	1961.07.11
申请号	US19580709468	申请日期	1958.01.17
申请人	WAH CHANG CORPORATION	发明人	LI JOHN CHOI
分类号	C22B34/24	主分类号	C22B34/24
代理机构		代理人
主权项
地址

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