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| Patents for S. G. Barrett | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,254,268 | Jan. 22, 1918 | R.O. Pickin | Core Drill | ||
| 1,260,974 | Mar. 26, 1918 | E.C. Filstrup | Saw Grinding Machine | saw sharpening machines | |