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| Patents for Otis Dean | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 72,463 | Dec. 24, 1867 | O. Dean | Improvement in Screwdrivers | |
 | 91,309 | Jun. 15, 1869 | O. Dean | Improved vise and drill combined | |
 | 95,663 | Oct. 12, 1869 | O. Dean | Improved Vise | |
 | 109,594 | Nov. 29, 1870 | O. Dean | Improvement in Combined Vises and Drills | |