| All Patents in class 137/53 |
Patents 1 -
10
of 29
      |
| Picture | Number | Date | Patentee | Title |
| | 5,540 | Apr. 25, 1848 | W.B. Hill | Balance Valve for Steam Engines |
| | RE1,309 | May 13, 1862 | H.D. Snow | Improvement in Governor-Valves |
 | 92,848 | Jul. 20, 1869 | J.F. Letellier | Governor |
 | 150,266 | Apr. 28, 1874 | E.A. Sutcliffe | Governors for Engines |
| | 151,129 | May 19, 1874 | J. Hock | Petroleum Dynamic Engines |
| | 158,300 | Dec. 29, 1874 | M. Muchin | Governors for Steam Engines |
| | 164,745 | Jun. 22, 1875 | W.D. Marks | Governor |
 | 284,555 | Sep. 04, 1883 | G.M. Hopkins | Gas Engine |
 | 348,998 | Sep. 14, 1886 | J.F. Place | Gas Engine |
| | 394,573 | Dec. 18, 1888 | E. Huber | Steam Engine Governor |
