| All Patents in class 60/461 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 1,835,976 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Machine Tool Having Hydraulic Feed |
| | 1,835,979 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Three-Pump Hydraulic System |
| | 1,884,277 | Oct. 25, 1932 | B. Sassen | Self Regulating Hydraulic System |
| | 2,077,894 | Apr. 20, 1937 | I. Patrick | Surge control valve for hydraulic presses |
| | 2,085,272 | Jun. 29, 1937 | W. Pohl | Transmission and Control Mechanism |
| | 2,500,797 | Mar. 14, 1950 | E.P. Bullard | Positioning Apparatus |
| | 2,682,748 | Jul. 06, 1954 | W. Ernst | Restrictor Valve for a Servomotor Circuit |
| | 2,898,891 | Aug. 11, 1959 | R.J. Flanigan, N.V. Gusching | Hydraulic flow control |
| | 3,043,275 | Jul. 10, 1962 | H.W. Reid, Jr. | Device for Control of Fluid Flow Rate |
