Method and apparatus for separating fragmentary minerals of different specific gravities in crushed ores |
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| 申请号 | US65519633 | 申请日 | 1933-02-04 | 公开(公告)号 | US2139789A | 公开(公告)日 | 1938-12-13 |
| 申请人 | WUENSCH HETERO CONCENTRATION P; | 发明人 | ERB WUENSCH CHARLES; | ||||
| 摘要 | |||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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