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| Patents Granted on 1823-04-05 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,679X | Apr. 05, 1823 | W. Knapp | Extracting the tanin from the bark of trees | ||
| 3,680X | Apr. 05, 1823 | I. Ives | Mode of manufacturing hair combs | household tools | |
| 3,681X | Apr. 05, 1823 | J. Hawkins | Giving temperature to artificial mineral waters | ||
| 3,682X | Apr. 05, 1823 | C. Jones | Mode of making stove pipes | stove pipes | |