| All Patents in class 60/461 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 1,835,976 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Machine Tool Having Hydraulic Feed | hydraulic apparatus |
| 1,835,979 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Three-Pump Hydraulic System | hydraulic apparatus |
| 1,884,277 | Oct. 25, 1932 | B. Sassen | Self Regulating Hydraulic System | hydraulic apparatus |
| 2,077,894 | Apr. 20, 1937 | I. Patrick | Surge control valve for hydraulic presses | hydraulic metalworking presses |
| 2,085,272 | Jun. 29, 1937 | W. Pohl | Transmission and Control Mechanism | machine tool controls |
| 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 | hydraulic apparatus |
| 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 | hydraulic apparatus |
