Granted Patent
Utility
US 6,226,539 · App. 09/320,145
Pulse oximeter having a low power led drive
Inventor:
R. Stephen Potratz
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: May 26, 1999
Inventor
R. Stephen Potratz
Assignee (at issue)
MALLINCKRODT LLC
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.