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| Patents for George M. Coburn | |||||
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| Number | Date | Patentee | Title | Type | |
| 209,646 | Nov. 05, 1878 | T.F. Carver, G.M. Coburn, E.N. Boynton | Improvement in metal-drilling machines | drill presses | |
| 245,134 | Aug. 02, 1881 | G.M. Coburn | Upright drill | drill presses | |