Granted Patent
Utility
US 5,225,161 · App. 07/848,897
Integrated membrane blood oxygenator/heat exchanger
Inventors:
Wilfred F. Mathewson, Richard Bringham, Philip L. Ritger, David L. Karshmer
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Mar 10, 1992
Inventors
Wilfred 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.