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| Patents Granted on 1829-04-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,457X | Apr. 18, 1829 | A. Salisbury, J.C. Langdon | Machine for Breaking Flax and Hemp | flax and hemp machines | |
| 5,458X | Apr. 18, 1829 | G. Brewster | Eclipse Speeder for Roping Cotton | textile machines | |
| 5,459X | Apr. 18, 1829 | T. Howe | Measuring for and Cutting Leather for Boots | cutting leather | |
| 5,460X | Apr. 18, 1829 | C. Atwood | Wool Carding Machine | cloth carding machines | |
| 5,461X | Apr. 18, 1829 | I. Sanderson | Cylinder Paper Machine for Paper Making | paper making machines | |