Granted Patent
Utility
US 5,217,689 · App. 07/428,270
Blood oxygenation system
Inventor:
Donald A. Raible
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Oct 26, 1989
Inventor
Donald A. Raible
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.