Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869899 | Pharmaceutical preparation and process for producing the same | Walter Burghart | 1989-09-26 |
| 4863720 | Pharmaceutical preparation and methods for its production | Walter Burghart | 1989-09-05 |