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| All Patents in class 241/232 | |||||
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| Number | Date | Patentee | Title | Type | |
| 124,788 | Mar. 19, 1872 | J.W. Burdwin, G.S. Tillinghast | Improvement in bark-breaking and rossing machines | debarking machines | |
| 2,190,029 | Feb. 13, 1940 | E.W. Kopke | Cane Mill | sugar cane apparatus | |