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| Patents Granted on 1828-04-22 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,076X | Apr. 22, 1828 | R. Hoe | Improvement in Brown's standing press frame | ||
| 5,077X | Apr. 22, 1828 | A. Hubbard | Revolving Hydraulic Engine | water pumps | |