Method and apparatus for refining lead,申请号US19300493344-传众专利搜索

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发明名称	Method and apparatus for refining lead
摘要
申请公布号	US1938582(A)	申请公布日期	1933.12.12
申请号	US19300493344	申请日期	1930.11.04
申请人	DAVIS PHILIP W	发明人	DAVIS PHILIP W.
分类号	C22B13/06	主分类号	C22B13/06
代理机构		代理人
主权项
地址

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