Granted Patent
Utility
US 5,368,744 · App. 08/100,904
Methods for treating wastewater
Inventors:
Michael R. Wood, Stephen R. Vasconcellos
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: Aug 3, 1993
Inventors
Michael R. Wood
Stephen R. Vasconcellos
Assignee (at issue)
Betz Laboratories, Inc.
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.