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| Patents for William F. Hopson | |||||
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| Number | Date | Patentee | Title | Type | |
| 178,617 | Jun. 13, 1876 | J.M. Evarts | Pipe Cutters. &c. | pipe cutting machines | |
| 189,875 | Apr. 24, 1877 | W.R. Petrie | Lubricator for Steam Engine | tool lubricators | |