Granted Patent
Utility
US 5,192,539 · App. 07/350,656
Infectious bursal disease virus production in continuous cell lines
Inventors:
Piet Van Der Marel, Pieter G. Mooren
Patented Case
View Patent ↗
Granted: Mar 9, 1993
Filed: May 11, 1989
Inventors
Piet Van Der Marel
Pieter G. Mooren
Assignee (at issue)
Akzo 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.