Granted Patent
Utility
US 5,001,288 · App. 07/395,017
Haloethylation of aromatic hydrocarbons
Inventor:
George A. Knesel
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Aug 17, 1989
Inventor
George A. Knesel
Assignee (at issue)
Ethyl Corporation
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.