| # | Name | Location | Applications |
|---|---|---|---|
| 1. | K-NFB READING TECHNOLOGY, INC. | 🇺🇸 Wellesley Hills, MA, United States | 1 |
| 2. | KNF Flodos AG | 🇨🇠Sursee, Switzerland | 1 |
| 3. | KNÖFERL Benjamin | 🇩🇪 Böhmfeld, Germany | 1 |
| 4. | KNÖFERL Johann | 🇩🇪 Schrobenhausen, Germany | 1 |