| Patents Granted on 1817-04-__ |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 2,768X | Apr. 03, 1817 | T. Burr | Improvement on Rumsey and McComb's water wheel | water wheels |
| 2,769X | Apr. 03, 1817 | T. Burr | Truss Bridge | truss bridges |
| 2,770X | Apr. 05, 1817 | L.D. Detroismonts | Construction of chimneys, stoves, and fire places | |
| 2,771X | Apr. 05, 1817 | J.P. Simpson | Improvement on the stove | stoves |
| 2,772X | Apr. 05, 1817 | D. Fountain, M. Fountain | Saw mill | sawmills |
| 2,773X | Apr. 12, 1817 | W. Elliot, T. Cohoon | Threshing machine | miller |
| 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 |
| 2,777X | Apr. 17, 1817 | W. Haslet (Haslett) | Spring vaccinator | |
| 2,778X | Apr. 18, 1817 | H. McCluer | Machine for cutting and heading nails | nail making machines |
| 2,779X | Apr. 21, 1817 | J. Widdifield | Perpetual water wheel | water wheels |
| 2,780X | Apr. 26, 1817 | E. Treadwell | Improvement on stoves | stoves |
| 2,781X | Apr. 28, 1817 | R. Wall | Composition for making copy, writing, and drawing books | |
| 2,782X | Apr. 29, 1817 | T. Nicholson | Pumps | pumps |
