Granted Patent
Utility
US 4,624,822 · App. 06/634,085
Methods for manufacture of valve flaps for cardiac valve prostheses
Inventors:
Pietro Arru, Gioacchino Bona, Maria Curcio, Franco Vallana
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Jul 25, 1984
Inventors
Pietro Arru
Gioacchino Bona
Maria Curcio
Franco Vallana
Assignee (at issue)
Sorin Biomedica S.p.A.
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.