Granted Patent
Utility
US 5,324,666 · App. 07/656,042
Process for determining oxidizable substances contained in an aqueous sample liquid
Inventors:
Friedrich W. Siepmann, Michael Teutscher
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: Apr 12, 1991
Inventors
Friedrich W. Siepmann
Michael Teutscher
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.