| All Patents in class 241/81 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 4,403X | Apr. 18, 1826 | M. Stockman | Improvement on Bicknell's Grist Mill | grist mills |
| 338,221 | Mar. 16, 1886 | W.R. Eynon | Grinding-mill | corn grinders |
| 1,121,684 | Dec. 22, 1914 | O.C. Wysong | Dovetailing-machine | dovetailing machines |
| 2,117,300 | May 17, 1938 | J. Corser | Rock crushing machine | ore processing apparatus |
| 2,210,093 | Aug. 06, 1940 | S.J. Morrissey | Material handling device | |
| 2,256,731 | Sep. 23, 1941 | G.C. Winther | Means for forming and segregating rock chips from aggregates | |
