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| Patents Granted on 1831-12-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| RX-70 | Dec. 28, 1831 | H. Deats | Plow | plows | |
| 6,882X | Dec. 28, 1831 | N.H. Dearborn | Sawing furrow boards | other wood sawing machines | |
| 6,883X | Dec. 28, 1831 | J. Deats | Plough | plows | |