Granted Patent
Utility
US 4,853,091 · App. 07/186,755
Method and apparatus for the electrochemical determination of oxygen concentration
Inventors:
Konrad Mund, Walter Preidel, J. Raghavendra Rao, Gerhard Richter
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Apr 26, 1988
Inventors
Konrad Mund
Walter Preidel
J. Raghavendra Rao
Gerhard Richter
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.