Granted Patent
Utility
US 5,164,103 · App. 07/313,021
Preconditioned atf fluids and their preparation
Inventor:
Andrew G. Papay
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Feb 21, 1989
Inventor
Andrew G. Papay
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.