| All Patents in class 91/333 |
Patents 1 -
10
of 18
      |
| Picture | Number | Date | Patentee | Title |
| | 10,398 | Jan. 03, 1854 | W. Wright | Operating Cut-Off Valves of Steam Engines |
| | 21,907 | Oct. 26, 1858 | C.A. Schultz | Reciprocating Steam Engine |
 | 73,069 | Jan. 07, 1868 | J.F. Allen | Improvement in valve-gear |
| | 172,116 | Jan. 11, 1876 | G.W. Hall, A.O. Whittemore | Engine-Governor |
| | 176,141 | Apr. 18, 1876 | J. Knowlson | Cut-Offs and Gears |
 | 336,837 | Feb. 23, 1886 | N.F. Burnham | Steam Engine |
| | 359,926 | Mar. 22, 1887 | W.S. Halsey | Steam Engine |
 | 374,752 | Dec. 13, 1887 | G.M. Pelton | Valve-gear |
 | 381,747 | Apr. 24, 1888 | J. Young | Valve-gear |
 | 423,963 | Mar. 25, 1890 | J.B. Stanwood | Steam-engine |
