| Patents Granted on 1851-12-__ |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 8,554 | Dec. 02, 1851 | W. Bushnell | Hand-drill | drill presses |
| 8,562 | Dec. 02, 1851 | W. Sherrod | Expanding Mandrel | metal lathe accessories and attachments |
| 8,569 | Dec. 02, 1851 | T.T. Strode | Machine for boring holes in posts | drilling and boring |
| 8,580 | Dec. 09, 1851 | J. Hyde | Chuck for Lathes | metal lathe chucks |
| 8,581 | Dec. 09, 1851 | C. Ketcham | Improvement in feeding logs in sawmills | sawmill carriages |
| 8,584 | Dec. 09, 1851 | G.W. Tolhurst | Lath-machine | lath making machines |
| 8,589 | Dec. 16, 1851 | H.W. Hayden | Machinery for Making Kettles and Articles of Like Character from Disks of Metal | metal spinning machines |
| 8,612 | Dec. 23, 1851 | W.F. Fergus, J.M. Patton | Cutter for planing-machines | cutters |
| 8,620 | Dec. 23, 1851 | J. Zimmer | Wooden Thread Cutting Machine | woodworking horizontal borers |
