Granted Patent
Utility
US 6,574,978 · App. 09/870,385
Very low temperature refrigeration system with controlled cool down and warm up rates and long term heating capabilities
Inventors:
Kevin Flynn, Paul Hall
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: May 30, 2001
Inventors
Kevin Flynn
Paul Hall
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.