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| Patents for William P. Barclay | |||||
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| Picture | Number | Date | Patentee | Title | |
| 271,680 | Feb. 06, 1883 | W.P. Barclay | Car Wheel Borer and Truing Machine | ||
| 303,609 | Aug. 19, 1884 | W.P. Barclay | Car Wheel Grinding and Turning Machine | ||