Granted Patent
Utility
US 4,055,861 · App. 05/675,592
Support for a natural human heart valve
Inventors:
Alain F. Carpentier, Xavier LECLERCQ, Jean Paris
Patented Case
View Patent ↗
Granted: Nov 1, 1977
Filed: Apr 9, 1976
Inventors
Alain F. Carpentier
Xavier LECLERCQ
Jean Paris
Assignee (at issue)
Rhone-Poulenc Industries
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.