Granted Patent
Utility
US 4,539,397 · App. 06/635,215
(Alkoxydiazo)halobenzeneacetonitriles
Inventor:
Venkataraman Ramachandran
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jul 27, 1984
Inventor
Venkataraman Ramachandran
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.