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| Patents Granted on 1815-12-27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,409X | Dec. 27, 1815 | E.A. Lester | Nail and brad cutting machine | nail making machines | |
| 2,410X | Dec. 27, 1815 | I. Jennings | Cotton gin | cotton gins | |
| 2,411X | Dec. 27, 1815 | S.D. Rogers, D. Merritt | Machine for steaming toothache | ||
| 2,412X | Dec. 27, 1815 | S. Hills | Steelyards | steel maker | |
| 2,413X | Dec. 27, 1815 | J. Springer | Wind saw mill | sawmills | |
| 2,414X | Dec. 27, 1815 | C. Barney | Stove | stoves | |