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| Patents for Jonas W. Leo | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 26,786 | Jan. 10, 1860 | F.W. Robinson | Improvement in horse-power | |
 | 30,932 | Dec. 18, 1860 | F.W. Robinson | Improvement in grain-separators | |
 | 49,791 | Sep. 05, 1865 | F.W. Robinson | Improvement in sawing-machines | |