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| Patents for Thomas R. Ferrall | |||||
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| Number | Date | Patentee | Title | Type | |
| 252,872 | Jan. 31, 1882 | T.R. Ferrall | Anti Frictional Bearing | industrial machine bearings | |
| RE10,455 | Mar. 04, 1884 | T.R. Ferrall | Anti Friction Bearing | industrial machine bearings | |