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| All Patents in class 122/491 | |||||
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| Number | Date | Patentee | Title | Type | |
| 321,016 | Jun. 30, 1885 | C.M. Giddings | Separator for Steam Boilers | traction engine boilers | |
| 600,921 | Mar. 22, 1898 | R.O. Jones, W. Lloyd, J. Lloyd | Steam-Eliminator | steam and water separators | |
| 796,231 | Aug. 01, 1905 | W. Lloyd | Steam-Eliminator | steam and water separators | |