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| Patents Granted on 1817-04-16 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,774X | Apr. 16, 1817 | I. Pinkney | Cylindrical boot cleaning machine | shoe and boot making machines | |
| 2,775X | Apr. 16, 1817 | B.N. Bursons | Machine for knapping woollen cloth | ||
| 2,776X | Apr. 16, 1817 | I. Griswold | Water wheel | water wheels | |