| All Patents in class 91/243 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,033,280 | Jul. 23, 1912 | E.F. Williams, L. Skinner | Steam Engine | steam engines |
| 1,109,807 | Sep. 08, 1914 | L. Skinner, E.F. Williams | Valve Gear for Steam Engines | steam engine valve gear |
| 1,111,983 | Sep. 29, 1914 | L. Skinner, E.F. Williams | Automatic Exhaust Valve | steam engine valves |
| 1,112,489 | Oct. 06, 1914 | R.C. Stevens | Steam Engine | steam engines |
| 1,119,462 | Dec. 01, 1914 | R.C. Stevens, A.D. Skinner | Steam Engine Valve | steam engine valves |
| 1,145,177 | Jul. 06, 1915 | A.D. Baker | Engine | steam engines |
| 1,202,913 | Oct. 31, 1916 | R.C. Stevens | Valve Operating Mechanism | steam engine valve gear |
| 1,260,184 | Mar. 19, 1918 | J.C. Glenn | Fluid-Operated Valve Mechanism | steam engine valves |
| 1,285,475 | Nov. 19, 1918 | W. Turnwald | Automatic exhaust-valve | steam engine valves |
| 1,886,212 | Nov. 01, 1932 | H.G. Mueller | Exhaust Valve Mechanism | steam engine valve gear |
| 1,927,526 | Sep. 19, 1933 | H.G. Mueller | Exhaust Valve Mechanism | steam engine valves |
| 2,560,449 | Jul. 10, 1951 | V.R. Noll, M. Kahr | Free piston engine | |
