Lead-purifying process,申请号US19300440544-传众专利搜索

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发明名称	Lead-purifying process
摘要
申请公布号	US1794647(A)	申请公布日期	1931.03.03
申请号	US19300440544	申请日期	1930.03.31
申请人	BUNKER HILL & SULLIVAN MINING & CONCENTRATING COMPANY	发明人	SCHUETTENHELM JOHN B.
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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