Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7159435 | Apparatus for straightening pipe | Uwe Feldmann, Manfred Kolbe, Hans-Jürgen Fischer | 2007-01-09 |
| 5101653 | Mechanical pipe expander | Rolf Hermes, Herbert Jansen, Hans-Gunter Schiffers | 1992-04-07 |