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| Patents for David F. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,381 | Nov. 11, 1873 | D.F. Williams, W.H. Brown | Improvement in Bench-Planes | ||
| 166,239 | Aug. 03, 1875 | D.F. Williams | Improvement in Bench-Planes | circular planes | |
| 166,240 | Aug. 03, 1875 | D.F. Williams | Levercap | bench planes | |