Granted Patent
Utility
US 5,395,331 · App. 08/021,526
Retrograde coronary sinus catheter having a ribbed balloon
Inventors:
William G. O'Neill, Nelson L. Huldin, Sheila J. Hanson, Walter L. Carpenter
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Feb 23, 1993
Inventors
William G. O'Neill
Nelson L. Huldin
Sheila J. Hanson
Walter L. Carpenter
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.