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| Patents for William F. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 241,749 | May 17, 1881 | J.W. Swales | Drag-saw for cutting snags | drag saws | |
| 245,632 | Aug. 16, 1881 | F.A. Huntington | Feed and set works for saw-mills | sawmill feed works | |
| 247,788 | Oct. 04, 1881 | A.R. Wells | Wood-planing machine | wood planers | |