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发明名称
Apparatus for recovering gold and other precious metals from milled ores and placer material
摘要
申请公布号
US1983701(A)
申请公布日期
1934.12.11
申请号
US19330671300
申请日期
1933.05.16
申请人
LEWIS FRANK D
发明人
LEWIS FRANK D.
分类号
C22B11/12
主分类号
C22B11/12
代理机构
代理人
主权项
地址
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