| All Patents in class 100/258A |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 1,900,050 | Mar. 07, 1933 | W. Ernst | Hydraulic Press Platen Travel Equalizer | hydraulic presses |
| 2,185,096 | Dec. 26, 1939 | R.B. Treer | Press | stamping presses |
| 2,978,976 | Apr. 11, 1961 | M.W. Hazelton, R.E. Griesheimer, C.J. Ostendorf | Level control for press brakes and the like | sheet metal brakes |
| 3,120,799 | Feb. 11, 1964 | H.B. Van Auken, J.J. Strnad | Platen-leveling control system for hydraulically-actuated brake presses | hydraulic metalworking presses |
| 3,763,690 | Oct. 09, 1973 | R.J. Heitner, J.A. Kirincic | Press brake ram leveling | sheet metal brakes |
| 4,690,049 | Sep. 01, 1987 | L. Malashenko | Hydraulic press with side slab guided upper platen | hydraulic metalworking presses |
| 4,694,744 | Sep. 22, 1987 | J. Hepburn, L. Malashenko | Hydraulic press without conventional side slabs and cross-head | hydraulic metalworking presses |
| 4,828,474 | May 09, 1989 | R. Ballantyne | Hydraulic cylinder device for platen spacing indication and control | hydraulic metalworking presses |
| 5,156,782 | Oct. 20, 1992 | R. Ballantyne | Maintaining press platens in parallel relationship | hydraulic metalworking presses |
