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| Patents Granted on 1818-04-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,945X | Apr. 28, 1818 | R. Huston, T. Bevley, J. Morton | Employing the waste steam | ||
| 2,946X | Apr. 28, 1818 | J.L. Sullivan | Paddles for propelling ships | nautical propulsion apparatus | |
| 2,947X | Apr. 28, 1818 | W. Pye | Locks and Bolts for Doors | door and window hardware | |
| 2,948X | Apr. 28, 1818 | W. Pye | Lock, Called the Union Lock | locks | |
| 2,949X | Apr. 28, 1818 | J. Greenwood | Wooden springs for carriages | ||