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| Patents for James F. Williamson | |||||
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| Picture | Number | Date | Patentee | Title | |
| 389,382 | Sep. 11, 1888 | J. Grime | Valve Gear for Engines | ||
 | 389,816 | Sep. 18, 1888 | F.O. Kilgore | Automatically-adjustable press-roll for gang-saw mills | |
 | 414,655 | Nov. 05, 1889 | M.C. Patrick | Miter-box | |
| 471,125 | Mar. 22, 1892 | F.O. Kilgore | Gang-saw mill | ||
 | 640,458 | Jan. 02, 1900 | F.S. Farr | Double-acting bandsaw mill | |
 | 640,459 | Jan. 02, 1900 | F.S. Farr | Saw-carrying wheel for bandsaw mills | |