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| Patents for Williamson Manufacturing Co. | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 711,607 | Oct. 21, 1902 | B.L. Williamson, E.S. Williamson | Vise | |
![]() | 791,741 | Jun. 06, 1905 | E.S. Williamson | Bench-vise | |