| All Patents in class 251/58 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 335,892 | Feb. 09, 1886 | J.P. Kern, J.C. Cosford | Steam Engine Governor | steam engine governors |
| 662,011 | Nov. 20, 1900 | M.R. Moore | Steam Engine Dash Pot | steam dash pots |
| 737,495 | Aug. 25, 1903 | W.O. Tourgee, R.H. Rice, J.W. Sargent | Valve-gear for steam-engines | steam engine valve gear |
| 1,457,074 | May 29, 1923 | C.R. Houghton | Constant-flow governor | |
| 1,916,433 | Jul. 04, 1933 | W.C. Muller | Speed Control Valve | hydraulic apparatus |
| 2,072,425 | Mar. 02, 1937 | L.W. Eggleston | Pump System | reciprocating pumps |
| 2,183,854 | Dec. 19, 1939 | W.S. Landon | Control Device | flow controls |
| 2,193,127 | Mar. 12, 1940 | G.H. Hansen, W.C. Furnas | Switch Assembly | pneumatic operated electric switches |
| 2,214,272 | Sep. 10, 1940 | E.J. Dillman | Fuel Supply Control Means | flow controls |
| 2,225,587 | Dec. 17, 1940 | E.J. Dillman | Control Device | flow controls |
| 2,267,688 | Dec. 23, 1941 | W.S. Landon | Control Device | flow controls |
| 2,276,227 | Mar. 10, 1942 | E.J. Dillman | Control Device | temperature controls |
