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| Patents Granted on 1827-02-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,660X | Feb. 12, 1827 | O. Packard | Horizontal cast iron paint mill | paint grinding mills | |
| 4,661X | Feb. 12, 1827 | O. Packard | Mode of shutting the water gate in mills | ||
| 4,662X | Feb. 12, 1827 | S. Hill | Burning lime and brick and boiling kettles | manufacturing mortar | |