Granted Patent
Utility
US 4,855,447 · App. 07/229,932
2-amino-3-aroyl-.gamma.-oxobenzenebutanoic acid and esters
Inventor:
David A. Walsh
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Aug 8, 1988
Inventor
David A. Walsh
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.