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| Patents for William N. Springer | |||||
| Number | Date | Patentee | Title | Type | |
| 842,589 | Jan. 29, 1907 | W.N. Springer | Traction Engine | steam traction engines | |
| 842,840 | Jan. 29, 1907 | W.N. Springer | Traction Engine | steam traction engines | |