Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4549474 | Air conditioner outlet | Michael Fey, Josef Haaz, Hans Riegel | 1985-10-29 |
| 4520844 | Regulator valve for stabilizing volume flow, especially in ventilation systems | Josef Haaz | 1985-06-04 |
| 4508022 | Ceiling air outlet | Hans Riegel | 1985-04-02 |
| 4488575 | Volume flow regulator for ventilation systems | Josef Haaz, Gregor Baumeister | 1984-12-18 |
| 4259898 | Ceiling air outlet for climate control system | Hans Riegel, Gerhard Kurzhals | 1981-04-07 |