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| Patents Granted on 1823-11-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,775X | Nov. 20, 1823 | E.L. Losey | Mode of converting iron into steel | steel maker | |
| 3,776X | Nov. 20, 1823 | J. Taylor | Kettle for coloring hats | milliner | |