| All Patents in class 73/521 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 60,192 | Dec. 04, 1866 | R.K. Huntoon | Improvement in steam-engine governors |
 | 71,015 | Nov. 19, 1867 | R.K. Huntoon | Governor for Steam Engines |
 | 82,729 | Oct. 06, 1868 | J.A. Marden | Improvement in governors for steam-engines |
| | 125,084 | Mar. 26, 1872 | N.G. Herreshoff, E. Reynolds | Improvement in Governors for Steam Engines |
| | 174,254 | Feb. 29, 1876 | B.W. Johnson | Governor |
| | 402,892 | May 07, 1889 | W. Berwick | Governor for Steam Engines |
| | 593,859 | Nov. 16, 1897 | A. Rosenberg | Gas Engine |
