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| Patents for Roy J. Bristol | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,504,401 | Aug. 12, 1924 | R.J. Bristol, W.C. Tull | Combined Pliers and Wrench | locking pliers | |
| 1,568,934 | Jan. 05, 1926 | R.J. Bristol, W.C. Tull | Wrench | locking pliers | |