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| All Patents in class 241/244 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 5,049X | Mar. 27, 1828 | A. Bull | Machine for grinding bark | |
| 7,825X | Nov. 19, 1833 | W. Mitchell | Straw cutter | ||
| 8,237X | Jun. 06, 1834 | S.M. Handy, J. Albee, E.B. Cutts | Mill for grinding corn and other grain (Grist mill) | ||
| 1,727,410 | Sep. 10, 1929 | W.H. Poesse | Material-treating machine | ||
| 1,809,363 | Jun. 09, 1931 | A.R. Teare | Material treating machine | ||
 | RE26,323 | Dec. 19, 1967 | P.J. Fontaine | Wood chipper | |