Granted Patent
Utility
US 4,606,350 · App. 06/675,625
Pacemaker battery impedance test circuit and method of operation
Inventor:
John G. Frost
Patented Case
View Patent ↗
Granted: Aug 19, 1986
Filed: Nov 28, 1984
Inventor
John G. Frost
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.