Granted Patent
Utility
US 6,743,170 · App. 09/956,418
Device to permit offpump beating heart coronary bypass surgery
Inventors:
Paul A. Spence, Warren P. Williamson, IV, Mark S. Ortiz
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Sep 18, 2001
Inventors
Paul A. Spence
Warren P. Williamson, IV
Mark S. Ortiz
Assignee (at issue)
Cardiothoracic Systems, 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.