Granted Patent
Utility
US 5,120,501 · App. 07/260,164
Integrated membrane blood oxygenator/heat exchanger
Inventors:
Wifred F. Mathewson, Richard Bringham, Philip L. Ritger, David L. Karshmer
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Oct 20, 1988
Inventors
Wifred F. Mathewson
Richard Bringham
Philip L. Ritger
David L. Karshmer
Assignee (at issue)
Baxter International Inc.
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.