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| Patents for J. Watt | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,439X | May 20, 1826 | F.A. Priest, J. Watt | Family spinning machine | spinner | |
| 251,525 | Dec. 27, 1881 | H. Codd | Instrument for opening internally-stoppered bottles | combination cork extractors | |