Granted Patent
Utility
US 4,720,350 · App. 06/851,617
Oxidation and corrosion inhibiting additives for railway diesel crankcase lubricants
Inventors:
Benjamin H. Zoleski, Rodney L. Sung, Ronald L. O'Rourke
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Apr 14, 1986
Inventors
Benjamin H. Zoleski
Rodney L. Sung
Ronald L. O'Rourke
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.