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| Patents Granted on 1828-05-31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,135X | May 31, 1828 | G.L. Thatcher | Manufacturing hat bodies by machinery | milliner | |
| 5,136X | May 31, 1828 | A. Hermange | Propelling ships and other vessels | nautical propulsion apparatus | |