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| Patents for Otis Tufts | |||||
| Picture | Number | Date | Patentee | Title | |
| 6,679X | Jul. 30, 1831 | O. Tufts | Hand printing press | ||
| 6,828X | Nov. 07, 1831 | O. Tufts | Strengthening toggle joint in the hand press | ||
| 8,380X | Aug. 22, 1834 | O. Tufts | Printing press | ||