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| All Patents in class 172/329 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,974X | Jan. 26, 1828 | W. Wiard | Plough | plows | |
| 8,293X | Jul. 08, 1834 | J. Jacobs | Plough | plows | |
| 8,417X | Sep. 22, 1834 | J.D. Egbert | Forcing pump | pumps | |