| All Patents in class 137/54 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 110,703 | Jan. 03, 1871 | C. Waters | Governor |
 | 173,069 | Feb. 01, 1876 | M.W. Shapley | Improvement in governors for steam-engines |
| | 335,933 | Feb. 09, 1886 | H.J. Johnson | Mechanism for Regulating Steam-Engines |
| | 358,598 | Mar. 01, 1887 | T.L. Dennis | Steam Engine |
| | 444,938 | Jan. 20, 1891 | T.W. Kinkaid | Rotary Engine |
| | 846,307 | Mar. 05, 1907 | F.G. Hobart | Gas Engine Regulating Valve |
 | 955,569 | Apr. 19, 1910 | W.W. White | Gate-controlling mechanism for water-wheels |
| | 1,865,560 | Jul. 05, 1932 | G.B. Duffield | Pop Valve |
