Granted Patent
Utility
US 4,655,148 · App. 06/792,392
Method of introducing dry sulfur oxide absorbent material into a furnace
Inventor:
Ralph D. Winship
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 29, 1985
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.