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| Patents Granted on 1817-01-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,723X | Jan. 18, 1817 | J. Ruffner, D. Ruffner | Mode of obtaining salt water | ||
| 2,724X | Jan. 18, 1817 | E. Hotchkiss | Straw Cutting Machine | hay or straw cutters | |