Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831130 | .beta.-lactam antibacterial agents | Harry A. Albrecht, Frederick M. Konzelmann | 1989-05-16 |
| 4801704 | Methylene penam and derivatives thereof | Chung Chen Wei, Manfred Weigele | 1989-01-31 |