| Patents Granted on 1850-05-21 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| RE170 | May 21, 1850 | C. Emmons | Improvement in planing machines | wood planers |
| 7,380 | May 21, 1850 | E. Jenney | Machinery for sawing staves | barrel making machines |
| 7,381 | May 21, 1850 | S. Lewis | Improvement in machines for sawing wood | drag saws |
| 7,388 | May 21, 1850 | S. Stevens | Machine for Grinding Spiral Knives | tool grinders |
| 7,389 | May 21, 1850 | T.C. Theaker | Apparatus for setting logs in sawmills | sawmill accessories |
| 7,390 | May 21, 1850 | J.D. White | Lathe for Turning | engine lathes |
