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| Patents for John Keyes | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,458 | May 22, 1849 | C. Carter | Boring and mortising machine | mortising machines | |
| 38,264 | Apr. 21, 1863 | W.A. Purves | Improvement in drag-saws | drag saws | |