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| All Patents in class 172/343 | |||||
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| Number | Date | Patentee | Title | Type | |
| 45,750 | Jan. 03, 1865 | T.T. Prosser, M.C. Darling, K.A. Darling | Improvement in cultivator gang-plows | ||
| 79,570 | Jul. 07, 1868 | W. Harvey | Wheel Cultivator | cultivators and tillers | |