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| Patents for McMahon & Carver | |||||
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| Number | Date | Patentee | Title | Type | |
| 187,353 | Feb. 13, 1877 | T.F. Carver | Improvement in rests for metal-lathes | metal lathes | |
| 239,933 | Apr. 12, 1881 | T.F. Carver | Friction-clutch | industrial machine clutches | |
| 257,883 | May 16, 1882 | M.F. McMahon | Lathe tail-stock | metal lathes | |