Granted Patent
Utility
US 4,818,490 · App. 07/084,928
Integral blood oxygenator
Inventors:
Gary A. Carson, Roger J. Elgas, Timothy M. Gordon
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Aug 13, 1987
Inventors
Gary A. Carson
Roger J. Elgas
Timothy M. Gordon
Assignee (at issue)
Cobe 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.