Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7214899 | Process for the continuous production of longitudinally welded metal tubes | Christian Frohne, Ernst Hoffmann | 2007-05-08 |
| 5519268 | Oscillating system | Helmut W. Martens, Wolfram Klebl | 1996-05-21 |
| 5192850 | Process and circuit for regulating welding current and power as a function of welding speed | Wolfram Klebl | 1993-03-09 |
| 5153025 | Method for the continuous marking of elongated material | Wolfram Klebl | 1992-10-06 |