Granted Patent
Utility
US 4,997,619 · App. 07/421,030
Shield for a nuclear reactor
Inventor:
William G. Pettus
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Oct 13, 1989
Inventor
William G. Pettus
Assignee (at issue)
The Babcock & Wilcox 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.