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| Patents for Alvin L. Smith | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,422,121 | Jun. 10, 1947 | A.L. Smith, J. Norstrom | Fluid pressure operated brake and adjustment therefor | ||
| 2,705,981 | Apr. 12, 1955 | A.L. Smith | Machine for joining wood | ||