| Patents Granted on 1850-05-?? |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| RE168 | May 07, 1850 | B. Holly | Improvement in Pumps | pumps |
| RE169 | May 07, 1850 | S. Merrick | Improvement in feeders for screw-machines | screw machines |
| 7,350 | May 07, 1850 | C. Richardson | Steam Engine Valve Gear | steam engine valve gear |
| 7,353 | May 07, 1850 | T.C. Theaker | Improvement in Oscillating Valves of Steam Engines | steam engine valves |
| 7,355 | May 14, 1850 | O.P. Allen | Machine for slitting clothes-pins | clothespin machines |
| 7,357 | May 14, 1850 | L. Bissell | Improvement in Connecting-Rods of Steam-Engines and Other Machinery | steam engine crank rods |
| 7,362 | May 14, 1850 | N. Colver | Revolving-Jaw Wrench | nut wrenches |
| 7,367 | May 14, 1850 | H. Patterson | Splint-machine | match making machines |
| 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 |
| XC-285 | May 25, 1850 | A. Fleck | New and improved plough or subsoil grubber | plows |
