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| Patents Granted on 1828-03-15 | |||||
| Number | Date | Patentee | Title | Type | |
| 5,038X | Mar. 15, 1828 | T. Knox | Carriages | ||
| 5,039X | Mar. 15, 1828 | T. Davis | Mode of propelling boats | nautical propulsion apparatus | |
| 5,040X | Mar. 15, 1828 | J. Williams | Construction of wash stands | ||