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| All Patents in class 198/701 | |||||
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| Number | Date | Patentee | Title | Type | |
| 145,771 | Dec. 23, 1873 | S. Wheeler | Improvement in ore-washers | ore processing apparatus | |
| 2,179,747 | Nov. 14, 1939 | P.C. Malmsten | Means for conveying aggregates in portable rock crusher machines | stone crushers | |