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| Patents for Frank S. Alden | |||||
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| Number | Date | Patentee | Title | Type | |
| 71,670 | Dec. 03, 1867 | J. Whitworth | Improvement in cutter-head for mouldings | cutters | |
| 74,277 | Feb. 11, 1868 | J. Baillie | Planing and resawing machine | wood planers | |