LEAD SULPHIDE ORE PROCESSING,申请号CAD346946-传众专利搜索

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发明名称	LEAD SULPHIDE ORE PROCESSING
摘要
申请公布号	CA346946(A)	申请公布日期	1934.12.25
申请号	CAD346946	申请日期
申请人	NIELS C. CHRISTENSEN	发明人	NIELS C. CHRISTENSEN
分类号		主分类号
代理机构		代理人
主权项
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