Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11009102 | Range-change transmission device | Frank Steffens, Ingo Pfannkuchen, Jens Luckmann | 2021-05-18 |
| 11002351 | Range-change transmission device | Ingo Pfannkuchen, Frank Steffens, Jens Luckmann | 2021-05-11 |