| Patents for Ottawa Iron Works |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 17,829 | Jul. 21, 1857 | W.M. Ferry, Jr. | Circular sawmill | circular sawmills |
| 20,150 | May 04, 1858 | W.M. Ferry, Jr. | Device for governing lateral motion of carriages in gigging back in circular sawing machines | circular sawmills |
| 26,262 | Nov. 29, 1859 | W.M. Ferry, Jr. | Journal-box for sawmill-carriages | sawmills |
| 32,418 | May 28, 1861 | W.M. Ferry, Jr. | Sawmill | sawmills |
| 95,889 | Oct. 19, 1869 | W.H. Ferry | Improvement in circular-saw mills | circular sawmills |
| 113,865 | Apr. 18, 1871 | W.M. Ferry | Improvement in saw-mills | sawmill carriages |
| 113,866 | Apr. 18, 1871 | W.M. Ferry | Improvement in saw-mills | sawmill headblocks |
| 132,086 | Oct. 08, 1872 | W. Lamb | Improvement in log-carriages for sawmills | sawmills |
| 139,142 | May 20, 1873 | O.H. Gronberg, W.M. Ferry | Improvement in edging-machines | circular ripsaws |
| 158,693 | Jan. 12, 1875 | W.M. Ferry | Improvement in saw-mill dogs | sawmill dogs |
| 173,907 | Feb. 22, 1876 | J. Collins | Improvement in saw-guides for circular-saw mills | circular sawmills |
| 173,927 | Feb. 22, 1876 | W.M. Ferry | Improvement in saw-guides for circular-saw mills | circular sawmills |
