Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698203 | European vaccine strains of the Porcine Reproductive Respiratory Syndrome virus (PRRSV) | Nicolaas Visser, Petrus Alphonsus Maria Van Woensel, Volker Ohlinger | 1997-12-16 |