Granted Patent
Utility
US 4,238,607 · App. 06/055,701
Pyridopyrrolo benzheterocycles
Inventor:
Parathasarathi Rajagopalan
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Jul 9, 1979
Inventor
Parathasarathi Rajagopalan
Assignee (at issue)
Endo Laboratories, 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.