Granted Patent
Utility
US 4,451,936 · App. 06/332,544
Supra-annular aortic valve
Inventors:
Alain F. Carpentier, Ernest Lane
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Dec 21, 1981
Inventors
Alain F. Carpentier
Ernest Lane
Assignee (at issue)
American Hospital Supply Corp.
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.