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| Patents for Charles H. Leonard | |||||
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| Number | Date | Patentee | Title | Type | |
| 61,420 | Jan. 22, 1867 | C. Hall | Tool Holder for Planing Machines | metal planer accessories | |
| 96,203 | Oct. 26, 1869 | L. Coes | Universal Fork-Wrench | wrench jaw components | |