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| Patents Granted on 1831-11-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,829X | Nov. 08, 1831 | O. Allen | Rotary or pump steam engine | rotary steam engines | |
| 6,830X | Nov. 08, 1831 | M. Mason | Iron borings rendered available in furnaces | industrial furnaces | |
| 6,831X | Nov. 08, 1831 | D.L. Tuthill | Furnace for heating hatter's irons | industrial furnaces | |