Granted Patent
Utility
US 6,578,573 · App. 10/025,141
Device for releasing a gas to a respirator
Inventor:
Jochim Koch
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Dec 19, 2001
Inventor
Jochim Koch
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.