Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690165 | Ventilation device for a space zone | Hans-Werner Roth, Andreas Bollinger, Claus Handel | 1997-11-25 |
| 5514193 | Air humidifier | Paul Wenger, Klaus Gunther | 1996-05-07 |
| 4200441 | Regenerative heat exchanger | Winfried Honmann | 1980-04-29 |