Granted Patent
Utility
US 5,911,332 · App. 08/988,070
HEPA filtered storage canisters
Inventors:
Terry J. Wickland, Carl Stephens
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Dec 10, 1997
Inventors
Terry J. Wickland
Carl Stephens
Assignee (at issue)
NUCLEAR FILTER TECHNOLOGY, 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.