Granted Patent
Utility
US 5,943,881 · App. 08/891,133
Cooling process and installation, in particular for the liquefaction of natural gas
Inventor:
Maurice Grenier
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Jul 10, 1997
Inventor
Maurice Grenier
Assignee (at issue)
Gaz de France-(GDF) Service National
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.