Granted Patent
Utility
US 6,045,576 · App. 08/932,818
Sewing ring having increased annular coaptation
Inventors:
Albert Starr, Robert Stobie, Michael N. Helmus
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Sep 16, 1997
Inventors
Albert Starr
Robert Stobie
Michael N. Helmus
Assignee (at issue)
Baxter International 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.