Granted Patent
Utility
US 5,013,470 · App. 07/419,565
Antioxidant VII lubricant additive
Inventor:
Nicolas Benfaremo
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Oct 10, 1989
Inventor
Nicolas Benfaremo
Assignee (at issue)
Texaco Inc.
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.