Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868882 | Loudspeaker | Alfred Ziegenberg | 1989-09-19 |
| 4805466 | Device for the contactless indirect electrical measurement of the torque at a shaft | Khaldoun Alasafi | 1989-02-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868882 | Loudspeaker | Alfred Ziegenberg | 1989-09-19 |
| 4805466 | Device for the contactless indirect electrical measurement of the torque at a shaft | Khaldoun Alasafi | 1989-02-21 |