Granted Patent
Utility
US 5,073,560 · App. 07/556,112
Spiro-isoxazolidine derivatives as cholinergic agents
Inventors:
Edwin S. C. Wu, Alexander Kover
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Jul 20, 1990
Inventors
Edwin S. C. Wu
Alexander Kover
Assignee (at issue)
Fisons Ltd.
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.