Granted Patent
Utility
US 4,289,138 · App. 06/157,504
Electrode assembly for temporary pacing and heart measurements
Inventor:
Kenneth Halvorsen
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Jun 9, 1980
Inventor
Kenneth Halvorsen
Assignee (at issue)
Medical Testing 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.