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| Patents Granted on 1848-04-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,513 | Apr. 18, 1848 | M. Alden | Improvement in blowers for furnaces | blowers | |
| 5,519 | Apr. 18, 1848 | J.R. Stafford | Grain Dryer | grain dryers | |
| 5,522 | Apr. 18, 1848 | L. Moore | Improvement in Seed-Planters | seeders | |
| 5,524 | Apr. 18, 1848 | J.R. Stafford | Grain Drier | grain dryers | |