US Patent: 6,469
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| Buoying Vessels over Shoals
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Patentee:
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| Abraham Lincoln (exact or similar names) - Springfield, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 22, 1849 |
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Patent Pictures:
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1 | 2
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Jeff Joslin
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Description: |
| This is the only patent ever granted to a person who became a U. S. president. |
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