Granted Patent
Utility
US 5,017,103 · App. 07/320,212
Centrifugal blood pump and magnetic coupling
Inventor:
Terrance J. Dahl
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Mar 6, 1989
Inventor
Terrance J. Dahl
Assignee (at issue)
St. Jude Medical, LLC
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.