Granted Patent
Utility
US 4,686,990 · App. 06/908,213
Battery test circuit for a heart pacemaker
Inventor:
Lennart Moberg
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Sep 17, 1986
Inventor
Lennart Moberg
Assignee (at issue)
Siemens Aktiengesellschaft
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.