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| Patents for William S. Loughborough | |||||
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| Number | Date | Patentee | Title | Type | |
| 148,563 | Mar. 17, 1874 | E. Hutson | Improvement in saw-arbors | circular saws | |
| 148,691 | Mar. 17, 1874 | W. Gleason | Metal Drilling Machines | drill presses | |
| 175,859 | Apr. 11, 1876 | W. Gleason | Machine for Cutting the Teeth of Metal Gears | gear making machines | |
| 176,800 | May 02, 1876 | D. McPherson | Grain-Binder | grain binders | |
| 206,908 | Aug. 13, 1878 | M.E. True | Crosscut-Saw Handle | crosscut saw handles | |