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| Patents for William A. Perry | |||||
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| Number | Date | Patentee | Title | Type | |
| 14,749 | Apr. 22, 1856 | H.R. Worthington | Completing the throw of the valves of direct-acting engines by the exhaust-steam | steam engine valve gear | |
| 15,400 | Jul. 22, 1856 | H.R. Worthington | Relieving steam slide-valves from pressure | steam engine valve gear | |
| 24,838 | Jul. 19, 1859 | H.R. Worthington | Pumping Engine | pumps | |