Granted Patent
Utility
US 4,388,735 · App. 06/203,804
Low profile prosthetic xenograft heart valve
Inventors:
Marian I. Ionescu, Jay A. Lenker, Robert F. Rosenbluth, Louis Seiler, Jr.
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Nov 3, 1980
Inventors
Marian I. Ionescu
Jay A. Lenker
Robert F. Rosenbluth
Louis Seiler, Jr.
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.