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| All Patents in class 172/490 | |||||
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| Number | Date | Patentee | Title | Type | |
| 26,422 | Dec. 13, 1859 | J.W. Fawkes | Steam-Plow | plows | |
| 49,938 | Sep. 12, 1865 | L.B. Walker | Improvement in cultivators | ||
| 1,006,752 | Oct. 24, 1911 | J.B. Hill | Soil-Pulverizer | harrows | |
| 1,202,947 | Oct. 31, 1916 | J. Wolf | Traction Plow | plows | |