| Patents for Walter Ernst |
Patents 1 -
15
of 47
      |
| Number | Date | Patentee | Title | Type |
| 1,653,350 | Dec. 20, 1927 | W. Ernst | High Speed Hydraulic Press | hydraulic presses |
| 1,672,561 | Jun. 05, 1928 | W. Ernst | High Speed Hydraulic Press | hydraulic presses |
| 1,693,109 | Nov. 27, 1928 | W. Ernst | Semiautomatic Valve | hydraulic valves |
| 1,700,565 | Jan. 29, 1929 | H.F. MacMillin, W. Ernst | Laminated Curb | liquid extracting machines |
| 1,711,378 | Apr. 30, 1929 | W. Ernst | Control Mechanism for Hydraulic Presses | hydraulic presses |
| 1,746,419 | Feb. 11, 1930 | W. Ernst | Control Mechanism for Hydraulic Presses | hydraulic presses |
| 1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,818,611 | Aug. 11, 1931 | W. Ernst | Radial Pump | hydraulic pumps |
| 1,819,703 | Aug. 18, 1931 | W. Ernst | Valve | hydraulic motor controls |
| 1,847,073 | Mar. 01, 1932 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,851,622 | Mar. 29, 1932 | W. Ernst | Valve Mechanism for Hydraulic Presses | hydraulic presses |
| 1,861,116 | May 31, 1932 | W. Ernst | Control Mechanism for Pumps | hydraulic pump controls |
| 1,861,337 | May 31, 1932 | W. Ernst | Hydraulic Metal Drawing Press | hydraulic metalworking presses |
| 1,870,499 | Aug. 09, 1932 | W. Ernst | Hydraulically Operated Drop Hammer | drop hammers |
| 1,870,500 | Aug. 09, 1932 | H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
