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| Patents for Willis W. Clarke | |||||
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| Number | Date | Patentee | Title | Type | |
| 59,721 | Nov. 13, 1866 | E.C. Kellogg | Machinists' Combination Tool | measurement gauges | |
| 332,274 | Dec. 15, 1885 | P. Miller | Hollow auger | augers | |