Granted Patent
Utility
US 4,893,022 · App. 07/109,507
Closure for casks containing radioactive materials
Inventors:
George V. B. Hall, Charles W. Mallory
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Oct 19, 1987
Inventors
George V. B. Hall
Charles W. Mallory
Assignee (at issue)
Westinghouse Electric Company LLC
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.