| All Patents in class 91/260 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 6,162 | Mar. 10, 1849 | G.H. Corliss | Cut-Off and Working the Valves of Steam Engines | steam engines |
| 7,838 | Dec. 17, 1850 | S.H. Gilman | Expansion-Gear for Horizontal Engines | steam engine valve gear |
| 177,059 | May 09, 1876 | G.H. Corliss | Valve Gear for Steam Engines | steam engine valve gear |
| 262,944 | Aug. 22, 1882 | H.F. Gaskill | Cut-Off Valve Gear | steam engine valve gear |
| 389,146 | Sep. 04, 1888 | N.T. Greene | Valve-gear for steam-engines | steam engine valve gear |
| 422,769 | Mar. 04, 1890 | N.T. Greene | Liberating valve-gear for engines | steam engine valve gear |
| 425,219 | Apr. 08, 1890 | N.T. Greene | Exhaust-valve-gear for engines | steam engine valve gear |
| 513,929 | Jan. 30, 1894 | F.G. Hobart | Steam Engine | steam engine valves |
| 790,358 | May 23, 1905 | H.F. Frisbie | Steam Engine | steam engines |
