| All Patents in class 251/127 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 299,503 | Jun. 03, 1884 | H.G. Ashton | Safety Valves | steam safety valves |
| 536,693 | Apr. 02, 1895 | R. Gould | Safety-valve | steam safety valves |
| 631,370 | Aug. 22, 1899 | J. Hughes | Safety Valve and Muffler | steam safety valves |
| 677,458 | Jul. 02, 1901 | W. Lloyd, J. Lloyd, R.O. Jones | Steam-Eliminator | steam and water separators |
| 681,441 | Aug. 27, 1901 | W.L. Corson | Exhaust Mechanism for Explosive Engines | exhaust mechanisms |
| 1,597,729 | Aug. 31, 1926 | W.W. Schettler | Safety Device for Preventing Passage of Flame | internal combustion engines |
