| All Patents in class 60/329 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 1,851,622 | Mar. 29, 1932 | W. Ernst | Valve Mechanism for Hydraulic Presses | hydraulic presses |
| 2,005,731 | Jun. 25, 1935 | C.W. Goodrich, H. Ernst | Viscosity Compensating System | hydraulic apparatus |
| 2,005,732 | Jun. 25, 1935 | B. Sassen, H. Ernst | Balanced Pressure Hydraulic Circuit | hydraulic apparatus |
| 2,006,311 | Jun. 25, 1935 | B. Sassen, H. Ernst | Leakage Compensator for Hydraulic Systems | hydraulic apparatus |
| 2,006,312 | Jun. 25, 1935 | B. Sassen, H. Ernst | Compensating Bleeder Valve | hydraulic apparatus |
| 2,070,811 | Feb. 16, 1937 | B. Sassen | Thermally Conditioned Machine Tool | milling machines |
| 2,166,940 | Jul. 25, 1939 | C.M. Conradson | Hydraulic Power System | machine tool controls |
| 3,075,503 | Jan. 29, 1963 | W.A. Kimsey | Hydraulic screw feed mechanism | boring and turning machines |
| 3,220,312 | Nov. 30, 1965 | A.H. Dall | Machine Tool Hydraulic System | hydraulic apparatus |
