Granted Patent
Utility
US 6,036,045 · App. 09/032,200
Cryogenic storage apparatus with lid vent
Inventor:
William C. West
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: Feb 27, 1998
Inventor
William C. West
Assignee (at issue)
Forma Scientific, 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.