| All Patents in class 60/378 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 1,851,622 | Mar. 29, 1932 | W. Ernst | Valve Mechanism for Hydraulic Presses |
| | 1,870,500 | Aug. 09, 1932 | H.F. MacMillin, W. Ernst | Hydraulic Press |
| | 1,884,060 | Oct. 25, 1932 | H.F. MacMillin | Hydraulic Press |
| | 1,895,710 | Jan. 31, 1933 | H.F. MacMillin, W. Ernst | Hydraulic Press |
| | 1,938,772 | Dec. 12, 1933 | H.R. Isler, H. Ernst | Hydraulic Drive for Milling Machines |
| | 1,940,668 | Dec. 26, 1933 | W. Ernst | Hydraulic Press Surge Control |
| | 1,956,758 | May 01, 1934 | W. Ernst | Hydraulic Press Operating Circuits |
| | 2,005,732 | Jun. 25, 1935 | B. Sassen, H. Ernst | Balanced Pressure Hydraulic Circuit |
| | 2,395,946 | Mar. 05, 1946 | G.A. Wahlmark | Mechanism for actuating machine tool supports |
