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| All Patents in class 241/79 | |||||
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| Number | Date | Patentee | Title | Type | |
| 110,023 | Dec. 13, 1870 | J.S. Elliott | Improvement in machines for mixing the materials to form artificial stone, &c. | ||
| 682,157 | Sep. 10, 1901 | D.L. Adelsperger | Grinding or Crushing Mill. | grinding mills | |
| 1,726,435 | Aug. 27, 1929 | F.J. Haller | Comminuting machine | ||