Granted Patent
Utility
US 6,032,665 · App. 08/842,367
Dosing device for adding an additive fluid to breathing gas in an anaesthesia machine or ventilator
Inventor:
Georgios Psaros
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Apr 24, 1997
Inventor
Georgios Psaros
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.