Granted Patent
Utility
US 5,591,209 · App. 08/246,007
Implantable defibrillator system for generating an active biphasic waveform
Inventor:
Mark W. Kroll
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: May 19, 1994
Inventor
Mark W. Kroll
Assignee (at issue)
Angeion Corp.
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.