Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7544121 | Ventilation unit | Thomas Jahn, Volker Doll | 2009-06-09 |
| 7217185 | Ventilating system | — | 2007-05-15 |
| 4644904 | Gas fired heating boiler | — | 1987-02-24 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7544121 | Ventilation unit | Thomas Jahn, Volker Doll | 2009-06-09 |
| 7217185 | Ventilating system | — | 2007-05-15 |
| 4644904 | Gas fired heating boiler | — | 1987-02-24 |