Granted Patent
Utility
US 5,234,457 · App. 07/773,847
Impregnated stent
Inventor:
Erik Andersen
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Oct 9, 1991
Inventor
Erik Andersen
Assignee (at issue)
Boston Scientific Limited
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.