| Patents for Walter Ernst |
Patents 1 -
10
of 47
      |
| Picture | Number | Date | Patentee | Title |
| | 1,653,350 | Dec. 20, 1927 | W. Ernst | High Speed Hydraulic Press |
| | 1,672,561 | Jun. 05, 1928 | W. Ernst | High Speed Hydraulic Press |
| | 1,693,109 | Nov. 27, 1928 | W. Ernst | Semiautomatic Valve |
| | 1,700,565 | Jan. 29, 1929 | H.F. MacMillin, W. Ernst | Laminated Curb |
| | 1,711,378 | Apr. 30, 1929 | W. Ernst | Control Mechanism for Hydraulic Presses |
| | 1,746,419 | Feb. 11, 1930 | W. Ernst | Control Mechanism for Hydraulic Presses |
| | 1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press |
| | 1,818,611 | Aug. 11, 1931 | W. Ernst | Radial Pump |
| | 1,819,703 | Aug. 18, 1931 | W. Ernst | Valve |
| | 1,847,073 | Mar. 01, 1932 | W. Ernst | Hydraulic Press |
