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| All Patents in class 301/5.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 217,506 | Jul. 15, 1879 | B.S. Benson | Traction Engine and Steam Plow | steam traction engines | |
| 604,006 | May 10, 1898 | H.C. Duensing | Traction Wheel | traction engine wheels | |