| Patents for William S. Colwell |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 44,606 | Oct. 11, 1864 | W.S. Colwell, U. Baird | Improvement in sawmills | sawmill carriages |
| 53,211 | Mar. 13, 1866 | W.S. Colwell, J.R. Winfield | Improvement in stave-machines | barrel making machines |
| 60,999 | Jan. 08, 1867 | W.S. Colwell, F. Veazie | Improvement in stave machines | barrel making machines |
| 73,504 | Jan. 21, 1868 | W.S. Colwell | Improvement in ploughs | |
| 73,505 | Jan. 21, 1868 | W.S. Colwell | Improvement in stave-machines | cooper |
| 74,309 | Feb. 11, 1868 | W.S. Colwell | Improvement in machines for dressing staves | barrel making machines |
| 83,466 | Oct. 27, 1868 | W.S. Colwell | Improvement in stave-machines | barrel making machines |
| 98,037 | Dec. 21, 1869 | W.S. Colwell | Improvement in device for conveying sawdust from saws | waste collection mechanisms |
| 107,665 | Sep. 27, 1870 | W.S. Colwell | Improvement in blowers | waste collection mechanisms |
| 133,922 | Dec. 17, 1872 | W.S. Colwell | Improvement in saw-mills | reciprocating sawmills |
