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| Patents Granted on 1797-04-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| 162X | Apr. 13, 1797 | J. Kersey | Fire engines | fire engines | |
| 163X | Apr. 13, 1797 | C. Leach | Boring pumps and conduits | wood drilling and boring | |
| 164X | Apr. 17, 1797 | F. Hall | Combination of astringent woods and vegetables in distilling | distilling | |
| 165X | Apr. 28, 1797 | J. Starr | Propelling Boats and Vessels | shipwright | |
| 166X | Apr. 29, 1797 | W. Faris | Propelling Carriages | carriage maker | |