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| All Patents in class 74/835 | |||||
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| Number | Date | Patentee | Title | Type | |
| 244,758 | Jul. 26, 1881 | F.F. Landis | Steam-engine valve-gear | valve gear | |
| 303,785 | Aug. 19, 1884 | R.W. Aitken | Valve Gear for Engines | steam engine valve gear | |
| 314,380 | Mar. 24, 1885 | H.H. Hudson | Reversing Gear | steam engine valve gear | |