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