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| All Patents in class 172/773 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,042X | Aug. 20, 1835 | P. Clark | Corn harrow | cultivators and tillers | |
| 79,706 | Jul. 07, 1868 | T.A. Wainwright | Cotton Plow | plows | |