| All Patents in class 72/446 |
Patents 31 -
36
of 36
      |
| Number | Date | Patentee | Title | Type |
| 2,942,503 | Jun. 28, 1960 | R.P. Fitzgerald | Power operated hammers | drop hammers |
| 3,777,527 | Dec. 11, 1973 | J.H. Lohman | Jig for setting the resistance Stops in a Rotary Bending Machine | sheet metal bending machines |
| 4,070,896 | Jan. 31, 1978 | R.J. Heitner | Press brake with improved ram leveling adjustment | |
| 4,170,124 | Oct. 09, 1979 | R. MacGregor | Hydraulic control system for press brakes and the like | sheet metal brakes |
| 4,443,928 | Apr. 24, 1984 | E.J. Kielma | Multiple-spindle Tool Changer | tool changers and storage mechanisms |
| 4,819,555 | Apr. 11, 1989 | R. Ballantyne, L. Malashenko | Hydraulic press with adjustable platen spacing | hydraulic metalworking presses |
