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| Patents for Oscar A. Dean | |||||
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| Number | Date | Patentee | Title | Type | |
| 141,702 | Aug. 12, 1873 | O.A. Dean | Improvement in circular-saw guards | woodworking machine safety guards | |
| 149,643 | Apr. 14, 1874 | O.A. Dean | Improvement in circular-sawing machines | woodworking machine safety guards | |