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| All Patents in class 180/12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 581,951 | May 04, 1897 | W.O. Worth | Traction Engine | steam traction engines | |
| 1,270,480 | Jun. 25, 1918 | L. McCloskey | Tractor | tractors | |
| 1,396,956 | Nov. 15, 1921 | P.R. Hawthorne | Tractor | tractors | |
| 1,423,962 | Jul. 25, 1922 | F.C. Olin | Tractor | tractors | |