Granted Patent
Utility
US 5,698,203 · App. 08/419,781
European vaccine strains of the Porcine Reproductive Respiratory Syndrome virus (PRRSV)
Inventors:
Nicolaas Visser, Petrus Alphonsus Maria Van Woensel, Volker Ohlinger, Emilie Weiland
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Apr 11, 1995
Inventors
Nicolaas Visser
Petrus Alphonsus Maria Van Woensel
Volker Ohlinger
Emilie Weiland
Assignee (at issue)
AKZO NOBEL N.V.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.