Leaching-precipitation-flotation process,申请号US19340742497-传众专利搜索

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发明名称	Leaching-precipitation-flotation process
摘要
申请公布号	US2130278(A)	申请公布日期	1938.09.13
申请号	US19340742497	申请日期	1934.09.01
申请人	KEYES HARMON E	发明人	KEYES HARMON E.
分类号	B03B7/00	主分类号	B03B7/00
代理机构		代理人
主权项
地址

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