Granted Patent
Utility
US 5,485,847 · App. 08/134,572
Pulse oximeter using a virtual trigger for heart rate synchronization
Inventor:
Clark R. Baker, Jr.
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Oct 8, 1993
Inventor
Clark R. Baker, Jr.
Assignee (at issue)
NELLCOR PURITAN BENNETT 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.