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| All Patents in class 280/93.502 | |||||
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| Number | Date | Patentee | Title | Type | |
| 626,483 | Jun. 06, 1899 | L. Brown | Steering Gear | steering apparatus | |
| 1,061,453 | May 13, 1913 | O.M. Cox | Traction Engine | steam traction engines | |
| 1,366,413 | Jan. 25, 1921 | F.C. Olin | Tractor | tractors | |