| All Patents in class 241/91 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 8,031X | Feb. 28, 1834 | J. Barber | Spindle and bush for a grist mill | miller |
| 8,933X | Jun. 26, 1835 | W.S. Johnson | Grinding grain, snuff, paints, etc. | miller |
| 166,743 | Aug. 17, 1875 | H. Bolthoff | Improvement in wet and dry ore crushers | ore processing apparatus |
| 777,779 | Dec. 20, 1904 | H.G. Dittbenner | Sawmill-hog | wood grinding machines |
| 1,114,031 | Oct. 20, 1914 | G.M. Pelton | Wood Chipping Machine | wood grinding machines |
| 1,440,632 | Jan. 02, 1923 | O. Schlichter | Slicing machine | meat slicers |
