Granted Patent
Utility
US 4,469,659 · App. 06/371,974
Sampling device for blood oxygenator
Inventors:
Gary A. Carson, Roger J. Elgas
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Apr 26, 1982
Inventors
Gary A. Carson
Roger J. Elgas
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.