Granted Patent
Utility
US 6,357,524 · App. 09/272,029
System for using inert gas in oil recovery operations
Inventor:
Anthony R. Boyd
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Mar 18, 1999
Inventor
Anthony R. Boyd
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.