Granted Patent
Utility
US 6,422,073 · App. 08/900,720
Device for identifying liquid anaesthetics
Inventors:
Erik Krahbichler, Tom Pessala
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Jul 28, 1997
Inventors
Erik Krahbichler
Tom Pessala
Assignee (at issue)
Siemens Elema AB
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.