| All Patents in class 251/75 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 1,395,551 | Nov. 01, 1921 | C.F. Brand | Snap Movement Valve Mechanism |
| | 1,847,073 | Mar. 01, 1932 | W. Ernst | Hydraulic Press |
| | 2,085,300 | Jun. 29, 1937 | E.J. Dillman | Control Device |
| | 2,213,181 | Aug. 27, 1940 | A. Von Wangenheim | Pressure Relief Device |
| | 2,234,088 | Mar. 04, 1941 | P.S. Russel | Control Device |
| | 2,269,395 | Jan. 06, 1942 | G.R. True, E.J. Dillman | Refrigeration Control Apparatus |
| | 2,276,227 | Mar. 10, 1942 | E.J. Dillman | Control Device |
| | 2,409,112 | Oct. 08, 1946 | E.J. Dillman | Automatic Valve |
| | 2,466,583 | Apr. 05, 1949 | E.J. Dillman | Trip Mechanism |
