Granted Patent
Utility
US 5,978,698 · App. 08/943,872
Angioplasty procedure using nonionic contrast media
Inventor:
Frederic L. SAX
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Oct 8, 1997
Inventor
Frederic L. SAX
Assignee (at issue)
MERCK & CO., 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.