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| Patents for William Hannay | |||||
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| Number | Date | Patentee | Title | Type | |
| 301,829 | Jul. 08, 1884 | W.H. Snyder, E. Penney | Traction-Engine | traction engine propulsion components | |
| 314,071 | Mar. 17, 1885 | W.H. Snyder | Saw-mill dog | sawmill dogs | |
| 314,072 | Mar. 17, 1885 | W. Snyder | Traction Engine | steam traction engines | |