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Patents for Roy J. Bristol | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 1,504,401 | Aug. 12, 1924 | R.J. Bristol, W.C. Tull | Combined Pliers and Wrench | |
![]() | 1,568,934 | Jan. 05, 1926 | R.J. Bristol, W.C. Tull | Wrench |