Granted Patent
Utility
US 6,803,578 · App. 10/223,464
Method for identification and partial-pressure determination of two gases in an unknown anesthesia gas mixture
Inventors:
Andrea Haeusler, Wajih Al-Soufi
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Aug 20, 2002
Inventors
Andrea Haeusler
Wajih Al-Soufi
Assignee (at issue)
Drager Medical AG & Co. KG
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.