Granted Patent
Utility
US 4,748,127 · App. 06/693,836
Process for the detection of biodegradable and toxic substances in aqueous solutions
Inventors:
Friedrich W. Siepmann, Michael Teutscher
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Jan 23, 1985
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.