Granted Patent
Utility
US 4,759,366 · App. 06/841,517
Rate responsive pacing using the ventricular gradient
Inventor:
Frank Callaghan
Patented Case
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Granted: Jul 26, 1988
Filed: Mar 19, 1986
Inventor
Frank Callaghan
Assignee (at issue)
Telectronic SA
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.