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| Patents for Edw. S. Duvall Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 486,758 | Nov. 22, 1892 | W.E. Brooke | Wrench | screw adjust wrenches | |
| 486,759 | Nov. 22, 1892 | W.E. Brooke | Combined Wrench and Screw Driver | screw adjust wrenches | |
| 489,875 | Jan. 10, 1893 | C.C. Reynolds | Combination Tool | combination tools | |
| 491,870 | Feb. 14, 1893 | W.E. Brooke | Wrench | alligator wrenches | |
| 504,518 | Sep. 05, 1893 | W.E. Brooke | Method Of Making Wrench Handles | making wrenches | |