Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890058 | Arrangement for measuring the slip of electric induction motors | Gerhard Trenkler, Reinhard Maier | 1989-12-26 |
| 4805159 | Acquistion of a projectile trajectory past a moving target | Helmut Negendank | 1989-02-14 |