Granted Patent
Utility
US 4,426,939 · App. 06/476,947
Method of reducing NO.sub.x and SO.sub.x emission
Inventor:
Ralph D. Winship
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Mar 21, 1983
Inventor
Ralph D. Winship
Assignee (at issue)
Combustion Engineering, 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.