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| All Patents in class 172/351 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,747X | Sep. 03, 1831 | W.P. Sample | Cotton cultivating machine | harrows | |
| 7,866X | Dec. 16, 1833 | J. Reichard | Seeding cultivator | cultivators and tillers | |
| 9,603X | Apr. 21, 1836 | J. Farlee | Plough | plows | |