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| All Patents in class 241/194 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,757,452 | May 06, 1930 | A.M. Dellinger | Hammer-mill rotor | |
| 2,268,860 | Jan. 06, 1942 | H.N. Edens, C.B. Molter | Limestone pulverizer | ||
| 4,172,481 | Oct. 30, 1979 | M.J. Brisson | Flail device | ||
 | 4,214,616 | Jul. 29, 1980 | M.J. Brisson | Tree delimbing apparatus | |