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| Patents for William H. Powers | |||||
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| Number | Date | Patentee | Title | Type | |
| 431,139 | Jul. 01, 1890 | W. Curtiss | Machine for dressing the teeth of gear-wheels | gear making machines | |
| 531,218 | Dec. 18, 1894 | W.H. Powers | Veneer-cutting machine | veneer machines | |