Granted Patent
Utility
US 5,752,931 · App. 08/724,520
Perfusion system with perfusion circuit display
Inventors:
Richard A. Nazarian, Bradley Keyes, Janelle J. Kozak, Timothy J. Kriewall, Richard A. Griewski
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Sep 30, 1996
Inventors
Richard A. Nazarian
Bradley Keyes
Janelle J. Kozak
Timothy J. Kriewall
Richard A. Griewski
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.