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| Patents Granted on 1828-04-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,068X | Apr. 15, 1828 | E.H. Collier | Making Paper from the "Ulva Maria" | manufacturing paper | |
| 5,069X | Apr. 15, 1828 | P. Pearson, J. Howe | Making sugar boxes by machinery | box making machines | |