Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826855 | Thieno pyridines and their use as anti-hypertensive agents | Gerd Schnorrenberg, Otto Roos, Ingrid Wiedemann, Wolfram Gaida, Wolfgang Hoefke | 1989-05-02 |
| 4816821 | Clocked direct voltage converter | — | 1989-03-28 |