Granted Patent
Utility
US 5,693,300 · App. 08/166,253
Process and apparatus for removing NO.sub.x from gas streams
Inventor:
Ralph J. Slone
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Dec 13, 1993
Inventor
Ralph J. Slone
Assignee (at issue)
NoxTech, 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.