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| Patents for Richard A. Breul | |||||
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| Number | Date | Patentee | Title | Type | |
| 696,405 | Apr. 01, 1902 | R.A. Breul | Clamping Wrench | quick adjust wrenches | |
| 696,406 | Apr. 01, 1902 | R.A. Breul | Wrench | quick adjust wrenches | |
| 853,157 | May 07, 1907 | R.A. Breul | Try-Square | try squares | |