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| Patents for Thomas J. Butler | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,458 | Dec. 31, 1839 | T.J. Butler | Mode of Cutting Seats, Slots, or Grooves for the Reception of Keys in the Hubs and Axles of Car-Wheels and in other Machinery | key seating machines | |
| 568,517 | Sep. 29, 1896 | T.J. Butler | Governor for Motors | machine governors | |