Granted Patent
Utility
US 4,865,581 · App. 07/056,401
Retroperfusion control apparatus, system and method
Inventors:
Ingemar H. Lundquist, Zoltan Tarczy-Hornoch, Thomas Joseph Kardos
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: May 29, 1987
Inventors
Ingemar H. Lundquist
Zoltan Tarczy-Hornoch
Thomas Joseph Kardos
Assignee (at issue)
Retroperfusion 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.