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| Patents for William J. Stevens | |||||
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| Number | Date | Patentee | Title | Type | |
| 32,917 | Jul. 23, 1861 | W.J. Stevens | Means of operating valves of steam-engines | steam engine valve gear | |
| RE1,957 | May 16, 1865 | W.J. Stevens | Means of operating valves of steam-engines | steam engine valve gear | |
| 142,292 | Aug. 26, 1873 | W.J. Stevens | Improvement in devices for operating the valves of steam-engines | steam engine valve gear | |