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| Patents for George E. Brettell | |||||
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| Number | Date | Patentee | Title | Type | |
| 90,338 | May 25, 1869 | G.E. Brettell | Chuck | drill press chucks | |
| 140,113 | Jun. 24, 1873 | G.E. Brettell | Mandrils for Holding Tapered Cast Rings | mandrels and arbors | |
| 187,960 | Mar. 06, 1877 | G.E. Brettell | Iron-Planer | metal planers | |