Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5988843 | Method and device for conducting/distributing air and light | — | 1999-11-23 |
| 5690165 | Ventilation device for a space zone | Hans-Werner Roth, Andreas Bollinger, Gerd-Eugen Schaal | 1997-11-25 |