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| All Patents in class 305/122 | |||||
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| Number | Date | Patentee | Title | Type | |
| 104,845 | Jun. 28, 1870 | T.F. Hall | Traction Engine | steam traction engines | |
| 122,850 | Jan. 16, 1872 | R.C. Parvin | Improvements in Land Carriages | traction engine tracks | |
| 125,843 | Apr. 16, 1872 | R.C. Parvin | Improvement in Steam Harvesters | harvesters | |
| 433,488 | Aug. 05, 1890 | G.H. Pond | Traction Engine | traction engine tracks | |
| 1,105,562 | Jul. 28, 1914 | J.B. Hill | Tractor | tractors | |