Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10100384 | Method for producing a tempered seamlessly hot-fabricated steel pipe | Christof Delhaes, Heiko Hansen | 2018-10-16 |
| 4848124 | Making seamless pipes, over 200 mm in diameter | Horst Biller, Manfred Bellmann, Wilhelm Nickel | 1989-07-18 |
| 4803861 | Guide structure for pierced hollows | Manfred Mueller, Klaus-Peter Schirmag, Wilhelm Nickel | 1989-02-14 |