Granted Patent
Utility
US 4,829,066 · App. 07/047,395
Pyridooxazinone-pyridazinone and pyrazolone compounds, cardiotonic compositions including the same, and their use
Inventors:
Alfred P. Spada, William L. Studt, Henry F. Campbell, Donald E. Kuhla
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: May 8, 1987
Inventors
Alfred P. Spada
William L. Studt
Henry F. Campbell
Donald E. Kuhla
Assignee (at issue)
Rorer Pharmaceutical Corporation
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.