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| All Patents in class 241/273.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,804X | May 02, 1835 | W. Denson | Straw cutter and corn sheller | hay or straw cutters | |
| 8,893X | Jun. 15, 1835 | G.M. Weaver | Grinding and shelling corn machine | miller | |
| 2,459 | Feb. 12, 1842 | W. Murray, J. Murray | Machine for breaking and grinding corn and corncobs | corn grinders | |
| RE7,264 | Aug. 15, 1876 | S.R. Thompson | Improvement in machines for rossing and grinding bark | bark processing machines | |
| 744,416 | Nov. 17, 1903 | O.J. Schroeter | Grater | food grinders | |