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| Patents Granted on 1812-12-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,851X | Dec. 17, 1812 | F. Tudor | Building or modelling ships or vessels | boats and ships | |
| 1,852X | Dec. 17, 1812 | I. Stilliman | Propelling boats by sculling | nautical propulsion apparatus | |