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| Patents for Eli S. Williamson | |||||
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| Number | Date | Patentee | Title | Type | |
| 711,607 | Oct. 21, 1902 | B.L. Williamson, E.S. Williamson | Vise | vises | |
| 791,741 | Jun. 06, 1905 | E.S. Williamson | Bench-vise | bench vises | |