| Patents for Walter Ernst |
Patents 16 -
30
of 47
      |
| Number | Date | Patentee | Title | Type |
| 1,870,501 | Aug. 09, 1932 | W. Ernst | Plural Pressure Pump Control for Hydraulic Presses | hydraulic pump controls |
| 1,892,568 | Dec. 27, 1932 | W. Ernst | Surge Valve for Hydraulic Presses or the Like | hydraulic presses |
| 1,895,710 | Jan. 31, 1933 | H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
| 1,899,678 | Feb. 28, 1933 | R. Thoreson, H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
| 1,900,050 | Mar. 07, 1933 | W. Ernst | Hydraulic Press Platen Travel Equalizer | hydraulic presses |
| 1,901,291 | Mar. 14, 1933 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,920,123 | Jul. 25, 1933 | W. Ernst | Radial Pump | hydraulic pumps |
| 1,927,583 | Sep. 19, 1933 | W. Ernst | Hydraulic Motor Control Means | hydraulic motor controls |
| 1,937,192 | Nov. 28, 1933 | W. Ernst, H.F. MacMillin | Control Mechanism for Hydraulic Motors | hydraulic motor controls |
| 1,940,668 | Dec. 26, 1933 | W. Ernst | Hydraulic Press Surge Control | hydraulic presses |
| 1,952,663 | Mar. 27, 1934 | W. Ernst | Control Mechanism for Pumps and Associated Press Circuits | hydraulic pump controls |
| 1,956,758 | May 01, 1934 | W. Ernst | Hydraulic Press Operating Circuits | hydraulic presses |
| 1,971,850 | Aug. 28, 1934 | W. Ernst | Press | hydraulic presses |
| 1,978,016 | Oct. 23, 1934 | W. Ernst | Control Apparatus for Pumps | hydraulic pump controls |
| 2,009,487 | Jul. 30, 1935 | R. Thoreson, W. Ernst | Hydraulic Press | hydraulic presses |
