Granted Patent
Utility
US 5,643,226 · App. 08/319,374
Low velocity aortic cannula
Inventors:
Delos M. Cosgrove, J. Frederick Cornhill, Christopher M. Boykin, Nelson L. Huldin, William G. O'Neill
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Oct 6, 1994
Inventors
Delos M. Cosgrove
J. Frederick Cornhill
Christopher M. Boykin
Nelson L. Huldin
William G. O'Neill
Assignees (at issue)
Minnesota Mining and Manufacturing Company
The Cleveland Clinic Foundation
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.