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| Patents for Alfred A. Ellsworth | |||||
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| Picture | Number | Date | Patentee | Title | |
| RE9,951 | Nov. 29, 1881 | A.J. Hoag | Reversing Gear for Steam Traction Engines | ||
 | 303,516 | Aug. 12, 1884 | A.J. Hoag | Traction Engine | |