Granted Patent
Utility
US 4,441,216 · App. 06/327,081
Tissue heart valve and stent
Inventors:
Marian I. Ionescu, Jay A. Lenker, Robert F. Rosenbluth
Patented Case
View Patent ↗
Granted: Apr 10, 1984
Filed: Dec 3, 1981
Inventors
Marian I. Ionescu
Jay A. Lenker
Robert F. Rosenbluth
Assignee (at issue)
Shiley Incorporated
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.