Granted Patent
Utility
US 4,863,487 · App. 07/043,736
Hydrocarbon fuel detergent
Inventors:
George R. Meyer, Walter R. Lyons, Jr.
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Apr 29, 1987
Inventors
George R. Meyer
Walter R. Lyons, Jr.
Assignee (at issue)
Nalco Chemical Company
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.