Granted Patent
Utility
US 4,840,177 · App. 07/117,125
Current-based defibrillator
Inventors:
Francis M. Charbonnier, Martin G. Rockwell, Carl E. Benvegar
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Nov 3, 1987
Inventors
Francis M. Charbonnier
Martin G. Rockwell
Carl E. Benvegar
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.