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| All Patents in class 137/424 | |||||
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| Number | Date | Patentee | Title | Type | |
| 677,458 | Jul. 02, 1901 | R.O. Jones, W. Lloyd, J. Lloyd | Steam-Eliminator | steam and water separators | |
| 1,080,507 | Dec. 02, 1913 | J.B. Armstrong | Trap-Valve Mechanism | steam and water separators | |