Copper extraction process,申请号US19290378298-传众专利搜索

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发明名称	Copper extraction process
摘要
申请公布号	US1862343(A)	申请公布日期	1932.06.07
申请号	US19290378298	申请日期	1929.07.15
申请人	GREENAWALT WILLIAM E	发明人	GREENAWALT WILLIAM E.
分类号	C22B15/00	主分类号	C22B15/00
代理机构		代理人
主权项
地址

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