Granted Patent
Utility
US 5,344,935 · App. 08/068,363
Alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids and methods for the preparation thereof
Inventor:
John Finn
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: May 27, 1993
Inventor
John Finn
Assignee (at issue)
American Cyanamid Company
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.