Granted Patent
Utility
US 6,053,896 · App. 09/071,303
Left ventricle valve
Inventors:
David W. Wilson, Kevin J. Kollar, Thomas Wilmering, Nicholas Scott Zeiman, David J. Giarracco
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: May 1, 1998
Inventors
David W. Wilson
Kevin J. Kollar
Thomas Wilmering
Nicholas Scott Zeiman
David J. Giarracco
Assignee (at issue)
Cobe Cardiovascular Operating Co., 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.