Granted Patent
Utility
US 6,663,783 · App. 10/321,859
Electrochemical cell for removing contaminants from a wastewater stream
Inventors:
Robert John Stephenson, Bruce D. Tennant, Donald Hartle
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Dec 17, 2002
Inventors
Robert John Stephenson
Bruce D. Tennant
Donald Hartle
Assignee (at issue)
McKay Creek Technologies, Ltd.
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.