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| All Patents in class 74/321 | |||||
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| Number | Date | Patentee | Title | Type | |
| 206,424 | Jul. 30, 1878 | O.R. Chapman | Metal-Planing Machine | metal planers | |
| 399,504 | Mar. 12, 1889 | W.W. Dingee | Straw Stacker | hay or straw stackers | |