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| All Patents in class 180/234 | |||||
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| Number | Date | Patentee | Title | Type | |
| 42,203 | Apr. 05, 1864 | R.H. Lecky | Traction Wheel | steam carriages | |
| 154,846 | Sep. 08, 1874 | E.P. Cowles | Traction Engines | steam traction engines | |
| 1,073,265 | Sep. 16, 1913 | L. Mayer | Vehicle running-gear | motor vehicles | |