| All Patents in class 60/380 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
| | 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 |
| | 1,870,500 | Aug. 09, 1932 | H.F. MacMillin, W. Ernst | Hydraulic Press |
| | 1,927,583 | Sep. 19, 1933 | W. Ernst | Hydraulic Motor Control Means |
| | 1,937,192 | Nov. 28, 1933 | H.F. MacMillin, W. Ernst | Control Mechanism for Hydraulic Motors |
| | 1,940,668 | Dec. 26, 1933 | W. Ernst | Hydraulic Press Surge Control |
| | 1,978,016 | Oct. 23, 1934 | W. Ernst | Control Apparatus for Pumps |
| | 2,000,420 | May 07, 1935 | L.L. Schauer, A.M. Sosa, J.H. McKewen | Hydraulic transmission system |
| | 2,085,303 | Jun. 29, 1937 | H. Ernst | Hydraulic Circuit Control Mechanism |
| | 2,365,748 | Dec. 26, 1944 | F.W. Curtis | Hydraulic Circuit |
