Granted Patent
Utility
US 4,469,792 · App. 06/290,174
Blood gas calibration and control fluid utilizing stroma-free hemoglobin
Inventors:
Richard S. Simmonds, Wells P. Owen
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Aug 5, 1981
Inventors
Richard S. Simmonds
Wells P. Owen
Assignee (at issue)
ALLIED CONSULTING, 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.