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| Patents Granted on 1851-12-02 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,554 | Dec. 02, 1851 | W. Bushnell | Hand-drill | drill presses | |
| 8,562 | Dec. 02, 1851 | W. Sherrod | Expanding Mandrel | metal lathe accessories and attachments | |
| 8,569 | Dec. 02, 1851 | T.T. Strode | Machine for boring holes in posts | drilling and boring | |