Granted Patent
Utility
US 5,454,962 · App. 08/082,991
Fluoroelastomer-friendly crankcase and drivetrain lubricants and their use
Inventors:
Francis J. Slama, Paula VETTEL
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Jun 25, 1993
Inventors
Francis J. Slama
Paula VETTEL
Assignee (at issue)
Ethyl Petroleum Additives, 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.