Granted Patent
Utility
US 4,900,856 · App. 07/199,288
Preparation of metal halide-amine complexes
Inventor:
Everett M. Marlett
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: May 26, 1988
Inventor
Everett M. Marlett
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.