Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4900376 | Hardening a cylindrical hollow object preferably made of steel | Ingo von Hagen, Christoph Prasser | 1990-02-13 |
| 4848124 | Making seamless pipes, over 200 mm in diameter | Horst Biller, Manfred Bellmann, Rolf Kuemmerling | 1989-07-18 |
| 4803861 | Guide structure for pierced hollows | Rolf Kuemmerling, Manfred Mueller, Klaus-Peter Schirmag | 1989-02-14 |
| 4638655 | Holding and guiding a mandrel rod in rolled stock in and adjacent to a tube rolling mill | Wilhelm Sebastian, Klaus-Peter Schirmag | 1987-01-27 |
| 4592222 | Device for the delivery and removal of the mandrel rods in skew and longitudinal rolling mills | Manfred Muller, Klaus-Peter Schirmagg, Engelbert Mailander | 1986-06-03 |