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| Patents Granted on 1831-02-14 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,377X | Feb. 14, 1831 | J. Hetzel, J. Bevier | Thrashing machine | threshers and thrashers | |
| 6,378X | Feb. 14, 1831 | S. Hurlbut | Hat bodies | ||
| 6,379X | Feb. 14, 1831 | E. Pulsifer, J.S. Pulsifer | Cheese press, called the eccentric wheel and lever press | cheese press | |
| 6,380X | Feb. 14, 1831 | D.S. Wooster | Spinning wool | spinner | |