Granted Patent
Utility
US 6,726,622 · App. 10/025,941
Device to permit offpump beating heart coronary bypass surgery
Inventors:
Paul A. Spence, Warren P. Williamson, IV
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Dec 20, 2001
Inventors
Paul A. Spence
Warren P. Williamson, IV
Assignee (at issue)
Origin Medsystems, 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.