| Patents Granted on 1843-04-?? |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 3,039 | Apr. 10, 1843 | W.S. Rider, A.K. Rider | Rotary steam-engine | rotary steam engines |
| 3,042 | Apr. 10, 1843 | J. Nasmyth | Machinery or apparatus operated by steam for forging, stamping, and cutting iron and other substances | steam hammers |
| 3,052 | Apr. 15, 1843 | J. Gallatin | Improvement in Plows | plows |
| 3,053 | Apr. 15, 1843 | J. Hamilton | Machine for curvilinear and compound-bevel sawing | reciprocating sawmills |
| RX-50 | Apr. 22, 1843 | J.A. Wilkinson | Improvement in machines for making weavers reeds by power | |
| 3,054 | Apr. 25, 1843 | A. Thompson | Machine for mortising hubs | mortising machines |
