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| Patents for William Stephenson | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-12,729 | Jan. 01, 1881 | W. Stephenson | Machine a Vapeur, Machine a Traction, Rouleu D'Agriculture, Charrue, Herse et Semoir-Traceur | steam traction engines | |
| CA-51,157 | Jan. 28, 1896 | W. Stephenson | Locomotive a Traction, Machiine a Battre Alimentateur et Charrue a Socs Multiples | traction engine accessories | |