Improvements on treatment of iron ores preliminary to smelting,申请号GB19380020354-传众专利搜索

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发明名称	Improvements on treatment of iron ores preliminary to smelting
摘要
申请公布号	GB517867(A)	申请公布日期	1940.02.12
申请号	GB19380020354	申请日期	1938.07.09
申请人	FRANK WILLIAM HARBORD	发明人
分类号	C22B1/24	主分类号	C22B1/24
代理机构		代理人
主权项
地址

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