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| Patents for Jefferson Machine Works | |||||
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| Number | Date | Patentee | Title | Type | |
| 18,909 | Dec. 22, 1857 | W. Kenyon | Screw-cutting machine | nut or bolt making machines | |
| 29,602 | Aug. 14, 1860 | W. Kenyon | Gas-pipe cutter | metal lathe accessories and attachments | |