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| Patents Granted on 1828-12-15 | |||||
| Number | Date | Patentee | Title | Type | |
| 5,308X | Dec. 15, 1828 | P. Warner, N. Bingham | Propelling canal boats | nautical propulsion apparatus | |
| 5,309X | Dec. 15, 1828 | E. Smith | Nostrums for curing the gout, etc. | ||