| All Patents in class 251/11 |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
 | 85,792 | Jan. 12, 1869 | G.H. Clemens | Improvement in steam safety-valves |
 | 207,421 | Aug. 27, 1878 | R.K. Huntoon | Improvement in gas-exhaust regulators |
 | 456,346 | Jul. 21, 1891 | H.E. Stager | Steam-radiator attachment |
| | 2,085,300 | Jun. 29, 1937 | E.J. Dillman | Control Device |
| | 2,214,272 | Sep. 10, 1940 | E.J. Dillman | Fuel Supply Control Means |
| | 2,266,975 | Dec. 23, 1941 | W.S. Landon | Control Device |
| | 2,275,624 | Mar. 10, 1942 | A.G. Hann | Control Device |
| | 2,276,227 | Mar. 10, 1942 | E.J. Dillman | Control Device |
| | 2,297,872 | Oct. 06, 1942 | F.Y. Carter, E.J. Dillman, W.E. Cowley | Control Apparatus |
| | 2,335,212 | Nov. 23, 1943 | W.S. Landon | Heating Apparatus |
