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| Patents Granted on 1830-12-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,291X | Dec. 17, 1830 | A. Bacon | Suspender springs and cords | ||
| 6,292X | Dec. 17, 1830 | J.C. Douglass | Steam engine boilers | stationary boilers | |
| 6,293X | Dec. 17, 1830 | H.H. Grover | Compound lever and self weighing scale | scales and balances | |
| 6,294X | Dec. 17, 1830 | W. Hoyt | Corn shelling machine | corn shellers | |