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| All Patents in class 209/397 | |||||
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| Number | Date | Patentee | Title | Type | |
| 18,444 | Oct. 20, 1857 | A. Gaar | Screen for grain-separators | corn and grain separators | |
| 21,628 | Sep. 28, 1858 | F.W. Robinson | Improvement in riddles for threshing-machines | threshers and thrashers | |
| 124,068 | Feb. 27, 1872 | A. Lane | Improvment in Corn Husking and Shelling Machnes | miller | |