Granted Patent
Utility
US 4,282,180 · App. 05/823,149
Blood oxygenator
Inventor:
Donald A. Raible
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Aug 9, 1977
Inventor
Donald A. Raible
Assignee (at issue)
Bentley Laboratories, 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.