Granted Patent
Utility
US 4,481,779 · App. 06/506,811
Cryogenic storage container
Inventor:
Alfred Barthel
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Jun 22, 1983
Inventor
Alfred Barthel
Assignee (at issue)
Union Carbide Corporation
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.