Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342190 | Stranding stock of large cross sections | Gerhard Ziemek, Ernst Hoffmann, Reiner Brunn | 1982-08-03 |
| 4331281 | Process and apparatus for production of welded tubes | Friedrich Schatz, Gerhard Ziemek | 1982-05-25 |