Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6357507 | Curtain arrangement for preventing spread of smoke | Stefan Siller, Joachim Luther, Werner Schellenberger, Thomas Wegner, Hansjuergen Linde +2 more | 2002-03-19 |
| 5862851 | Curtain arrangement for preventing spread of smoke | Stefan Siller, Joachim Luther, Werner Schellenberger, Thomas Wegener, Hansjuergen Linde +2 more | 1999-01-26 |