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| All Patents of Type: sieves and screens | |||||
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| Number | Date | Patentee | Title | Type | |
| D28,987 | Jul. 05, 1898 | W.W. Dingee | Separator Sieve | corn and grain separators | |
| 870,302 | Nov. 05, 1907 | W.F. MacGregor | Sieve for Threshing Machines | sieves and screens | |