Granted Patent
Utility
US 5,217,434 · App. 07/776,559
Innerless dilatation catheter with balloon stretch valve
Inventor:
Michelle Arney
Patented Case
View Patent ↗
Granted: Jun 8, 1993
Filed: Oct 15, 1991
Inventor
Michelle Arney
Assignee (at issue)
Scimed Life Systems, 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.