Apparatus for roasting zinc ores,申请号US19300492340-传众专利搜索

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发明名称	Apparatus for roasting zinc ores
摘要
申请公布号	US1929713(A)	申请公布日期	1933.10.10
申请号	US19300492340	申请日期	1930.10.30
申请人	JEAN QUENEAU AUGUSTIN LEON	发明人	QUENEAU AUGUSTIN LEON JEAN
分类号	C22B19/02;F27B9/24	主分类号	C22B19/02
代理机构		代理人
主权项
地址

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