Granted Patent
Utility
US 5,687,722 · App. 08/507,754
System and method for the algebraic derivation of physiological signals
Inventors:
Jonathan Tien, David R. Marble
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jul 26, 1995
Inventors
Jonathan Tien
David R. Marble
Assignee (at issue)
Spacelabs Medical, Inc.
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.