Granted Patent
Utility
US 4,718,376 · App. 07/015,482
Boiler sootblowing control system
Inventors:
Pierre E. Leroueil, R. Kent James, Gregory K. Brock
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Feb 9, 1987
Inventors
Pierre E. Leroueil
R. Kent James
Gregory K. Brock
Assignee (at issue)
Weyerhaeuser NR Company
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.