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| Patents Granted on 1831-09-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,757X | Sep. 13, 1831 | B. Bruff | Raising vessels, weighing anchors, discharging cargoes, removing buildings by the elevating power engine | ||
| 6,758X | Sep. 13, 1831 | W. Bryent | Anthracite cooking stove | stoves | |