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| Patents Granted on 1830-04-16 | |||||
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| Number | Date | Patentee | Title | Type | |
| NX-5,920 | Apr. 16, 1830 | A. Andrews | Saw Mill | sawmills | |
| 5,920X | Apr. 16, 1830 | R.P. Clarke | Columbian washer | washing machines | |