Granted Patent
Utility
US 4,251,670 · App. 06/066,210
Glycol polyether-acrylic acid-amine reaction product for fuel and mineral oils
Inventor:
William M. Cummings
Patented Case
View Patent ↗
Granted: Feb 17, 1981
Filed: Aug 13, 1979
Inventor
William M. Cummings
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.