Granted Patent
Utility
US 4,440,723 · App. 06/282,283
Blood oxygenator
Inventor:
Lucas S. Gordon
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jul 10, 1981
Inventor
Lucas S. Gordon
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.