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| Patents for Carl H. Leonard | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,653,861 | Dec. 27, 1927 | C.H. Leonard | Wrench | pliers type wrenches | |
| 2,100,034 | Nov. 23, 1937 | C.H. Leonard | Wrench | screw adjust wrenches | |