Granted Patent
Utility
US 4,999,993 · App. 07/391,684
Reactor expander topping cycle
Inventor:
Ashok D. Rao
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Aug 9, 1989
Inventor
Ashok D. Rao
Assignee (at issue)
Fluor 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.