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| Patents for Alex. F Roberts | |||||
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| Number | Date | Patentee | Title | Type | |
| 83,045 | Oct. 13, 1868 | J.C. Crumpton | Improvement in Vises | bench vises | |
| 85,372 | Dec. 29, 1868 | J. Elliott | Pipe and Faucet Clamp | ||