Granted Patent
Utility
US 6,571,622 · App. 10/032,934
Combined respiratory flow sensor
Inventor:
Jochim Koch
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Dec 26, 2001
Inventor
Jochim Koch
Assignee (at issue)
Dräger 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.