Granted Patent
Utility
US 5,417,072 · App. 08/148,815
Controlling the temperature in a cryogenic vessel
Inventors:
Arnold H. Silver, James E. Zimmerman
Patented Case
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Granted: May 23, 1995
Filed: Nov 8, 1993
Inventors
Arnold H. Silver
James E. Zimmerman
Assignee (at issue)
TRW Limited
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.