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| Patents for William Brownell | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,257 | Nov. 28, 1865 | J.R. Brown | Screw Cutting Machine | screw machines | |
| 76,579 | Apr. 14, 1868 | A.F. Allen | Improved Signal Hose-Wrench for Coupling and Uncoupling Engine-Hose | wrench jaw components | |