| All Patents in class 137/52 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
| | 25,769 | Oct. 11, 1859 | H.D. Snow | Governor Valve |
| | RE1,309 | May 13, 1862 | H.D. Snow | Improvement in Governor-Valves |
 | 50,793 | Nov. 07, 1865 | A.P. Brown | Improvement in steam-engine governors |
 | 66,617 | Jul. 09, 1867 | P. Estes, F.J. Nutz | Governor |
 | RE2,753 | Aug. 27, 1867 | A.P. Brown | Improvement in governors for steam engines |
| | 99,751 | Feb. 15, 1870 | J. Bell | Steam Engine Governor |
 | 140,414 | Jul. 01, 1873 | J. Hendy | Improvement in engine-governors |
| | 314,528 | Mar. 24, 1885 | A.E. Hardy | Governor for Steam Engines |
 | 318,289 | May 19, 1885 | T.R. Pickering | Safety Attachment for Steam Engine Governors |
 | 667,595 | Feb. 05, 1901 | F.W. Spacke | Automatic Stop for Governors |
