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| Patents Granted on 1831-01-31 | |||||
| Number | Date | Patentee | Title | Type | |
| 6,356X | Jan. 31, 1831 | J.G. Conser | Machine for dressing staves | ||
| 6,357X | Jan. 31, 1831 | B. Hinkley | Washing machine | washing machines | |
| 6,358X | Jan. 31, 1831 | L.L. Miler | Cleaning sheep's wool from burs | ||