Granted Patent
Utility
US 4,272,854 · App. 06/064,400
Bi-leaflet heart valve
Inventor:
Jack C. Bokros
Patented Case
View Patent ↗
Granted: Jun 16, 1981
Filed: Aug 7, 1979
Inventor
Jack C. Bokros
Assignee (at issue)
Carbomedics Inc.
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.