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| Patents for William J. Lewis | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,056X | Feb. 01, 1814 | W.J. Lewis | Manufacturing salt | ||
| 2,430X | Feb. 01, 1816 | W.J. Lewis | Manufacturing salt | ||
| 3,066X | Feb. 03, 1819 | W.J. Lewis | Propelling boats and vessels | ||