| All Patents in class 91/171 |
Patents 1 -
4
of 4
      |
| Number | Date | Patentee | Title | Type |
| 2,410,603 | Nov. 05, 1946 | P.P. Dubosclard | Forming roll | sheet metal forming rolls |
| 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 |
| 3,059,431 | Oct. 23, 1962 | F.E. Munschauer, Jr., G.H. Trautman, Jr., C.O. Jones, Jr. | Hydraulic power transmission systems for press brakes and like machines | punch presses |
| 3,757,641 | Sep. 11, 1973 | J.R. Goff | Control system for synchronizing movement of driven machine members | sheet metal brakes |
