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| All Patents in class 198/537 | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,779 | Mar. 26, 1861 | O.H. Burdett | Removing sawdust as it is formed | waste collection mechanisms | |
| 285,788 | Oct. 02, 1883 | C.H. Bidwell | Elevator | threshers and thrashers | |
| 2,210,093 | Aug. 06, 1940 | S.J. Morrissey | Material handling device | ||