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| All Patents in class 172/165 | |||||
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| Number | Date | Patentee | Title | Type | |
| 460,020 | Sep. 22, 1891 | C.W. Larsen | Plow | auxiliary wrenches | |
| 544,845 | Aug. 20, 1895 | S. Adams, M.M. Cochran | Plow | auxiliary wrenches | |