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| Patents for William L. Grout | |||||
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| Picture | Number | Date | Patentee | Title | |
| 333,461 | Dec. 29, 1885 | E.L. Bowers, W.L. Grout | Machine for Drilling Metal Blanks | ||
| 445,694 | Feb. 03, 1891 | E.L. Bowers, W.L. Grout | Turret Lathe | ||
| 445,696 | Feb. 03, 1891 | E.L. Bowers, W.L. Grout | Gripping Device for Lathes | ||
| 445,697 | Feb. 03, 1891 | E.L. Bowers, W.L. Grout | Gripping Device for Lathes | ||
 | 469,323 | Feb. 23, 1892 | J.E. Titus, E.L. Bowers | Slotting-machine | |