Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953834 | Pendulum with bending spring joint | Eberhard Handrich, Martin Hafen, Bruno Ryrko | 1990-09-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953834 | Pendulum with bending spring joint | Eberhard Handrich, Martin Hafen, Bruno Ryrko | 1990-09-04 |