Granted Patent
Utility
US 4,807,632 · App. 07/052,032
Measuring instrument for intracardial acquisition of the blood oxygen saturation of a patient for controlling the pacing rate of a heart pacemaker
Inventors:
Hans-Dieter Liess, Roland Heinze
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: May 19, 1987
Inventors
Hans-Dieter Liess
Roland Heinze
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.