Granted Patent
Utility
US 5,422,278 · App. 08/252,383
Blood gas/electrolyte calibrator and quality controls
Inventor:
Kathryn D. Herring
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Jun 1, 1994
Inventor
Kathryn D. Herring
Assignee (at issue)
Dade 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.