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| Patents for Michael S. O'Neil | |||||
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| Number | Date | Patentee | Title | Type | |
| 268,527 | Dec. 05, 1882 | M.S. O'Neil | Shaper attachment for rounding wooden poles | cutterhead machine accessories | |
| 297,534 | Apr. 22, 1884 | M.S. O'Neil | Cutter-head | cutterheads | |