Granted Patent
Utility
US 6,019,722 · App. 08/936,184
Device to permit offpump beating heart coronary bypass surgery
Inventors:
Paul A. Spence, Warren P. Williamson, IV
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Sep 17, 1997
Inventors
Paul A. Spence
Warren P. Williamson, IV
Assignee (at issue)
Guidant Corporation
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.