Granted Patent
Utility
US 6,190,311 · App. 08/850,150
Retractor and instrument platform for a less invasive cardiovascular surgical procedure
Inventors:
Robert C. Glines, Ivan Sepetka
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: May 2, 1997
Inventors
Robert C. Glines
Ivan Sepetka
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.