Granted Patent
Utility
US 4,592,866 · App. 06/746,091
Fused aromatic oxazepinones, thiazepinones, diazepinones and sulfur analogs thereof
Inventor:
Albert D. Cale, Jr.
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Jun 18, 1985
Inventor
Albert D. Cale, Jr.
Assignee (at issue)
A. H. Robins Company, Incorporated
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.