Granted Patent
Utility
US 4,950,257 · App. 07/244,290
Catheter introducer with flexible tip
Inventors:
Lee Hibbs, Yue-Teh Jang, Vern Liebmann, Dennis Spinks
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Sep 15, 1988
Inventors
Lee Hibbs
Yue-Teh Jang
Vern Liebmann
Dennis Spinks
Assignee (at issue)
MALLINCKRODT LLC
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.