| Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) | |
|---|---|
| 02/1976 | |
| 02/10/1976 | US3937113 Punching apparatus |
| 02/03/1976 | US3936624 Multifinger contact |
| 02/03/1976 | US3935778 Apparatus for actuating a plurality of piston and cylinder assemblies |
| 02/03/1976 | US3935772 Punching device having selectable pinch point clearance |
| 02/03/1976 | US3935771 Punch and stripping guide assembly |
| 02/03/1976 | US3935755 Turret alignment apparatus |
| 01/1976 | |
| 01/20/1976 | US3933071 Shearproof punch |