Granted Patent
Utility
US 4,451,469 · App. 06/450,261
Selected 6-alkyl-and 4,6-dialkyl-2(1H)-pyridinones as cardiotonics
Inventors:
Baldev Singh, George Y. Lesher
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Dec 16, 1982
Inventors
Baldev Singh
George Y. Lesher
Assignee (at issue)
Sterling Drug, Inc.
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.