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| All Patents in class 91/313 | |||||
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| Number | Date | Patentee | Title | Type | |
| 16,358 | Jan. 06, 1857 | R.H. Fletcher | Operating Steam Slide Valves | steam engine valve gear | |
| 79,803 | Jul. 14, 1868 | J.S. Barden | Rotary Steam Engines | rotary steam engines | |