Granted Patent
Utility
US 6,647,279 · App. 10/104,316
Hybrid optical delivery system for photoplethysmography
Inventor:
Jonas Alexander Pologe
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Mar 22, 2002
Inventor
Jonas Alexander Pologe
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.