Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7563993 | Insert for an opening of an appliance | Rolf Drotleff, Daniel Mueller, Eugen Mikeler | 2009-07-21 |
| 7411128 | Cable feed-through and cable feed-through system | Rolf Drotleff | 2008-08-12 |