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| All Patents of Type: steam valves | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,972X | Jan. 23, 1834 | D.B. Lee | Valves for steam boilers | steam valves | |
| 856,569 | Jun. 11, 1907 | A.D. Catlin | Steam Feed Valve | steam valves | |
| 1,772,406 | Aug. 05, 1930 | L.E. Whiton | Valve | steam valves | |
| 2,014,541 | Sep. 17, 1935 | F.W. Wappat | Pressure regulating valve | steam valves | |