| # | Name | Location | Applications |
|---|---|---|---|
| 1. | K-FEE SYSTEM GMBH | 🇩🇪 Bergisch-Gladbach, Germany | 1 |
| 2. | K-FEE SYSTEMS GMBH | 🇩🇪 Bergisch Gladbach, Germany | 1 |
| 3. | KÄFER Eugen | 🇩🇪 Renningen, Germany | 5 |
| 4. | KÄFER Jürgen | 🇩🇪 Schiffweiler, Germany | 3 |
| 5. | KÄFER Michael | 🇦🇹 Wien, Austria | 1 |
| 6. | KÄFER Oskar | 🇩🇪 Freudenstadt, Germany | 1 |