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| All Patents in class 280/81.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 175,601 | Apr. 04, 1876 | G.W. Fitts | Traction Engine | steam traction engines | |
| 357,036 | Feb. 01, 1887 | C. Roberts | Traction Engine | steam traction engines | |
| 586,873 | Jul. 20, 1897 | H.H. Shepherd | Traction Engine | internal combustion traction engines | |