| All Patents in class 137/52 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 25,769 | Oct. 11, 1859 | H.D. Snow | Governor Valve | steam engine governors |
| RE1,309 | May 13, 1862 | H.D. Snow | Improvement in Governor-Valves | steam engine governors |
| 50,793 | Nov. 07, 1865 | A.P. Brown | Improvement in steam-engine governors | steam engine governors |
| 66,617 | Jul. 09, 1867 | P. Estes, F.J. Nutz | Governor | steam engine governors |
| RE2,753 | Aug. 27, 1867 | A.P. Brown | Improvement in governors for steam engines | steam engine governors |
| 99,751 | Feb. 15, 1870 | J. Bell | Steam Engine Governor | steam engine governors |
| 140,414 | Jul. 01, 1873 | J. Hendy | Improvement in engine-governors | steam engine governors |
| 314,528 | Mar. 24, 1885 | A.E. Hardy | Governor for Steam Engines | steam engine governors |
| 318,289 | May 19, 1885 | T.R. Pickering | Safety Attachment for Steam Engine Governors | steam engine governors |
| 667,595 | Feb. 05, 1901 | F.W. Spacke | Automatic Stop for Governors | steam engine governors |
| 979,289 | Dec. 20, 1910 | S.S. Hall | Self Locking Automatic Stop for Governors | internal combustion engine governors |
| 1,234,882 | Jul. 31, 1917 | W.A. Doble | Speed Governor | water wheel governors |
