Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5121088 | Frequency response equalizer | — | 1992-06-09 |
| 4917407 | Plastic part provided with a metal threaded element | Heiner Gassmann, Siegfried Beck | 1990-04-17 |
| 4714278 | Plastic part provided with a metal threaded element | Heiner Gassmann, Siegfried Beck | 1987-12-22 |
| 4194235 | Automatic headlight tilting device for automobiles | — | 1980-03-18 |