Granted Patent
Utility
US 4,743,607 · App. 07/055,666
Cardiotonic tricyclic imidazolones
Inventors:
Winton D. Jones, George P. Claxton, Richard A. Schnettler, Richard C. Dage
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: May 29, 1987
Inventors
Winton D. Jones
George P. Claxton
Richard A. Schnettler
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.