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| All Patents in class 403/89 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,531 | Jan. 11, 1853 | P. Frost | Improvement in Scythe-Fastenings | wrenches | |
| RE524 | Feb. 09, 1858 | P. Frost | Improvement in Scythe-Fastenings | wrenches | |
| RE2,834 | Jan. 14, 1868 | P. Frost | Improvement in Scythe-Fastenings | wrenches | |
| 87,251 | Feb. 23, 1869 | P. Frost | Scythe Snath | wrenches | |