Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8485177 | Drive mechanism for a down draft vent system | Egon Feisthammel, Dieter Rosmann | 2013-07-16 |
| 7886735 | Drive mechanism for a down draft vent system | Egon Feisthammel, Dieter Rosmann | 2011-02-15 |