Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6427513 | Process and device for producing pipes as per the UOE process | Johannes Gross-Weege | 2002-08-06 |
| 6253596 | Process and device for producing pipes as per the UOE process | Johannes Gross-Weege | 2001-07-03 |
| 4392369 | Diagonal rolling of hollow stock | Walter Knauf, Karl-Heinz Brensing, Rolf Kümmerling | 1983-07-12 |