Granted Patent
Utility
US 5,213,577 · App. 07/629,811
Device for examining the functions of the endothelium or the intima of blood vessels
Inventor:
Michael Kratzer
Patented Case
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Granted: May 25, 1993
Filed: Dec 21, 1990
Inventor
Michael Kratzer
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.