Granted Patent
Utility
US 4,803,210 · App. 07/183,537
Cardiotonic tricyclic oxazolones
Inventors:
Winton D. Jones, Richard A. Schnettler, George P. Claxton, Richard C. Dage
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Apr 14, 1988
Inventors
Winton D. Jones
Richard A. Schnettler
George P. Claxton
Richard C. Dage
Assignee (at issue)
Merrell Dow Pharmaceuticals 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.