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| Patents for Charles Leach | |||||
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| Number | Date | Patentee | Title | Type | |
| 377,755 | Feb. 14, 1888 | C. Leach, F.S. Hazelton | Wrench | pipe and nut combination wrenches | |
| 473,007 | Apr. 19, 1892 | C. Leach | Wrench | screw adjust wrenches | |