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| Patents for William P. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 261,832 | Aug. 01, 1882 | W.P. Clark | Pipe Vise | pipe and chain vises | |
| 294,442 | Mar. 04, 1884 | W.P. Clark | Circular saw mill | circular sawmills | |
| 374,752 | Dec. 13, 1887 | G.M. Pelton | Valve-gear | steam engine valve gear | |