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| Patents for Oscar C. Ferris | |||||
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| Number | Date | Patentee | Title | Type | |
| 111,859 | Feb. 14, 1871 | F.B. Miles | Turning Lathe | engine lathes | |
| 142,493 | Sep. 02, 1873 | F.B. Miles | Planing Machines | metal planers | |
| 142,694 | Sep. 09, 1873 | F.E. Hahn | Improvement in boring-mills | vertical boring mills | |
| 146,064 | Dec. 30, 1873 | F.E. Hahn | Work Holding Devices | drill press accessories | |
| 185,121 | Dec. 05, 1876 | F.B. Miles | Journals and Bearings | metal lathes | |