Granted Patent
Utility
US 5,441,072 · App. 08/203,089
Fuel additive metering system
Inventors:
Sophie Indey, William R. Hagan
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Feb 28, 1994
Inventors
Sophie Indey
William R. Hagan
Assignee (at issue)
Rhone-Poulenc, 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.