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| Patents Granted on 1831-01-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,321X | Jan. 07, 1831 | A. Gorham | Stump machine | stump elevators | |
| 6,322X | Jan. 07, 1831 | G.W. Grater | Stereotype Extendible Blocks | printer | |
| 6,323X | Jan. 07, 1831 | M.D. Mann, S. Sturdevant | Vertical Type Caster | type casting machines | |